DarkLordOfOptics
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Guns, Optics, 2nd Amendment and resisting the Left in everything they touch.
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Visiting Primary Arms

Primary Arms visit turned out to be quite surprising. I have been talking to the gentleman who runs PA on and off for a while now, but somehow I still wasn't grasping the entire scale of their operation. Now, to be fair, I am certainly still not aware of everything they do. However, looking back on it, I really shouldn't have been that surprised. They have a seriously substantial warehouse since they stock they stuff they sell and, looking at their website, it should have been apparent that requires space and manpower.

What I didn't know is that they have a pretty solid engineering group in-house and how much effort and resources go into the Primary Arms branded optics. When PA optics line started, what they had were just comparatively standard OEM scopes that stood out because of the ACSS reticles. As I have elaborated previously, some ACSS reticles I like and some I do not. A lot of it is just personal preference, to be honest, and some is just stylistically differences. However, all of the ACSS reticles I have seen to date are intelligently conceived and I can clearly see what the design goals were and how they went about achieving them. That's more than I can say about most reticles out there.

PA optics line still has the various ACSS reticles, but there is a lot more to them now which is how they ended up within my field of view, so to speak.
Many of their products stopped looking like "me too" designs with good reticles. The line of micro-prisms that I have been talking about is unique to them. Other small prismatics out there come from different OEMs.

The new PLxC 1-8x24 LPVO is just exceptional and easily clears the bar to make it onto my list of recommendations (with room to spare, frankly). Optomechanically, it is clearly going after scopes like Razor Gen3 and ATACR. Given the price, if they ever add a diffractive reticle to it, they will absolutely be in the same conversation.

The interesting part is that when I first saw that scope, it absolutely threw me for a loop. At this stage in the game, when I look at a scope, I can usually make a pretty good guess which OEM it is from, especially which Japanese OEM. This scope sorta looked like a LOW design, except I had never seen that exact version (and for a good reason since it turned out to be entirely new and likely proprietary to PA). The turrets, however, did not look like it and did not feel like it. Click feel was different and when I took the removable part off, the insides were kinda sealed. I generally do not take scopes apart beyond what is expected of a consumer (sort of a courtesy to the manufacturers; although there are exceptions to that), so I did not go further.

Now, that I got a chance to spend a little time with the team at PA, it all makes sense. There is a good size engineering group in-house and an increasing number of the PA optics have some elements of their own design, with turrets being at the top of the list. There are other things coming though. For example, they are a bit cagey about what is happening there, but they are building a cleanroom. You do not need a cleanroom like that for QC.

Now, one of the things I look for when I visit companies is the quality of the team. If you have a cohesive team, a couple of smart engineers and company support you can get a lot of stuff done. The gentleman who is in charge of engineering at PA looked strangely familiar. It turned out that we had crossed paths in the past (through my dayjob) a decade or so ago. More importantly, we have some mutual friends who speak highly of his abilities. That's the kind of stuff I pay attention to and that also explains why I am seeing increasingly sophisticated opto-mechanical designs coming out of PA, with more on the way. Also, I got a glimpse into the insides of one of his turrets designs (looking at the CAD screen over his shoulder) and it is a clever system that should be durable.

For another example, PA has a few red dot sights in different price ranges and the new one I got to play with is the SR-10. It is a part of their SLx line, so it is on the budget end of things. We'll see how it does, but offhand, it looks like a pretty straightforward Docter-pattern open emitter red dot sight for use on both pistols and long guns. However, for a couple of hundred bucks, it comes with a picatinny mount and a very slim Glock MOS adapter. I'll confirm, but I am pretty sure it will sit low enough to co-witness with standard Glock sights. Decent collimation quality with a 3MOA dot.

The product line I have been paying most attention to lately was probably GLx. Don't get me wrong, the new PLxC seems good enough to satisfy even my optics snobbery and the SLx are very good budget options (admittedly, I am mostly familiar with SLx red dots and micro-prisms). GLx, however, might be the best bang for the buck of the bunch, starting with the 2x prismatic I looked at a little while back. Then, I looked at the 2.5-10x44 that is very feature rich and just excellent mechanically (it also has their own turret design and, now that I met the engineering team, I understand why it is excellent). Optically, it is better than adequate, but not exceptional. It is good enough for me to recommend it overall, though. I knew they had new GLx scopes coming, and that is what I really wanted to see while I was there. They were refreshingly open about their upcoming products. A couple of them they asked me to not talk about yet, but there are several that are coming soon enough to discuss. There were four new variable scopes I saw. One was the 1-10x24 FFP LPVO made in Japan by JOL. Three were made in the Philippines, all with FFP reticles: 1-6x24, 3-18x44 and 4.5-27x56. I got a chance to see near-production quality prototypes of all four and I was, honestly, pretty impressed.

General disclaimer: there isn't all that much I can immediately say from looking at scope indoors, but there are a few things to look for and I did not see any glaring problems. Mechanically, everything had a good feel and all had PA's own turrets that I noted earlier. I am not entirely sure what the final pricing will be and I suspect they are still finalizing that. Once I know the specifics, I'll let you know.

The 1-10x24 is a bit on the heavy side of the LPVO world, but I have seen this optical system before and it really is quite good with a well designed eyepiece, so it is easy to get behind. It should play nicely against other LPVOs out there that are used in a DMR-ish role, i.e. on accurate AR carbines that have to work from up-close and personal out to a few hundred yards.

The 1-6x24 was completely new to me. I had no idea it was in the works. Of the two LPVOs, this one is probably the one I am more curious about since I have not seen that optical system before. It did look quite respectable. Reticle illumination seemed adequately bright, but I was indoors the whole time. That's something to check. The eyepiece, however, is done very well, so I expect it to be quite easy to get behind. We had a long warehouse to use, so I set the scopes up on a tripod and spent some time peering through them on different magnifications. The 1-6x24 had good detail and good flare control best I could tell.

The scope I was arguably most impressed with was the 3-18x44. It has the same excellent zero-lock and zero-stop turrets I liked on the 2.5-10x44, but a better magnification range for crossover use and likely better image quality. With this one, we are getting into magnification ranges where there isn't a ton I can really say indoors, but it looked promising. This scope should be a contender as a crossover scope for anything from accurate ARs to lightweight precision rifles. I'll post full specs once available.

Same goes for the 4.5-27x56 model. It appeared to have more or less the same mechanical features, so I have reasonable confidence it will work well. I did not see anything obviously wrong optically, so that is encouraging too.

All of these GLx scopes showed some commonality of mechanical design and eyepiece design, which is a good thing. GLx scopes seem to sit in that rough sweetspot where you can get a lot for your money, but these are not cheap scopes. That's roughly the same market where Vortex' PST Gen2 plays. Various Athlon Ares scopes are in there as well as several others. This is where you can find decent quality Japanese scopes and higher end Phillipine-made and Chinese designs. This is really where the battle of the OEMs is happening right now, I think.

Lastly, I wanted to look at how they do QC and it turns out that every PA branded optics that comes in, no matter how expensive, is looked at. Every single one is taken out of the box and checked. That, I did not expect. To the best of my knowledge, for the inexpensive chinese optics, noone else checks every single one. With higher end products that is pretty common, but checking EVERYTHING is pretty unusual.

Overall, it was an interesting visit. PA is located in the part of the country I visit with reasonable regularity, so I'll make it a point to check on them every once in a while. I kinda want to know what they plan to do with that cleanroom.

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Nuclear Bright FFP LPVOs

This is a re-upload, so if you receive two notifications, my apologies.
The original upload got stuck on processing the video.

This originally started as a review of the Vortex AMG 1-10x24, but ended up being more of a direct comparison of what you get with these three modern LPVOs that have nuclear bright reticle illumination:

Vortex AMG 1-10x24 https://eurooptic.sjv.io/rEQm1y
Primary Arms PLxC 1-8x24 https://alnk.to/9xnqt1y
Vortex Razor Gen3 1-10x24 https://eurooptic.sjv.io/rEQm1y black anodize or https://alnk.to/4XzIXQ9 for bronze anodize

The first question will always be why I selected these specific three scopes. The obvious answer is simply because I had them. I was really hoping to get the new SAI10 here since it goes head to head against these group, but that was delayed. I will do an update when it gets here.

Why did I not include the two Nightforce options: NX8 and ATACR? Several reasons. Mostly because they have been around for a while and are a known quantity. I have looked at both...

00:28:27
Flashlights: Olight Odin Mini and PL X

Late last year Olight reached out to me and asked me if I want to review a couple of flashlights. I had never spent any time with any Olight products, so I took a quick look at the available specs and decided to give it a shot.
I suspect that Olight is quite irritated with me since, apparently, the stipulate a specific timeline to reviewers when they send them products. I was blissfully unaware of that (maybe I should have read the fine print) and did my usual thing where I spend an ungodly amount of time with whatever I happened to be reviewing before I run my mouth.

This video is long. I have hundred of rifle rounds and well over a thousand of handgun rounds behind each light. They shook a little loose, but not too much.

Beam evaluation you see in this video was done after lots of shooting.

Beam quality is quite good, but these are relatively budget lights, so I was pleasantly surprised. Build quality is also quite respectable

https://amzn.to/4x7Wpnt
https://amzn.to/3REL51O...

00:53:50
Long overdue: Element Theos 2-10x42

The amount of time I spent on this scope trying to find something really significant to nitpick on is borderline embarrassing. Yet, other than the original observations on it being a little heavy and that the reticle could have benefited from a couple more numbers, I really did not come up with much of anything.

It is decidedly a precision-oriented MPVO, yet it does everything well. In terms of pure optimization and understanding the real purpose of what these scopes are used for, the baby Theos is just superb.

While the current iteration of the excellent Primary Arms 1.5-12x36 PLxC is aimed at AR guys stepping up, the Theos is set up just right for precision guys trying to equip their accurate semi-auto with something a little smaller and lower magnification.

It is an absolutely exemplary design for stretching the range of an accurate DMR.

At the time when this is written EO has one for $2049, https://eurooptic.sjv.io/enEP06 which is an exceptional price for this scope. I thought it was...

00:22:35
Looking at red dot sights a little bit.

Red dot sights, for me, are kind of a love/hate thing.
Modern red dot sights are awesome. However as I get older I need them more yet I can use them for less.
As your eyes change, you often end up developing mild astigmatism and age related presbyopia.
Astigmatism is basically a condition where saggital and tangential rays do not focus on the same spot. When you look at a red dot and the aiming point is not round, astigmatism is what's causing it.
Presbyopia is the gradually worsening inability to focus on anything close to you. That's why I now have to wear contacts (I have been near sighted most of my life) to see far and then reading glasses to work on the computer and read.
Astigmatism limits how far I can shoot with a red dot, but even with a misshapen aiming point, hitting a human torso size targets out to 75 yards or so is not an issue.
Presbyopia makes it increasingly harder to use iron sights. That's one of the reasons I use red dot sights on most of my handguns. Where I do use iron sights, I have developed a strong preference to ...

Aeroprecision Bankruptcy

It looks like Aero finally announced that they are going through a bankruptsy. That explains why they are bombarding me with emails that everything is half off.
I suppose that a combination of a down market and being located in very gun unfriendly Washington state was not good for Aero and their portfolio companies: Ballistic Advantage and Stag Arms.
The claim is that the companies are operating through this transition, but it has not been announced whether someone is going to buy up the assets and keep them running.

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Another heads up: PA HTX-1 red dot sight is in stock briefly.

Primary Arms released another batch of their US made red dot sights onto the website: https://alnk.to/eDVnzqG

I have been running one for some time and, aside from being US made, it is very well engineered.

Spartan's CP Brace: Initial Impressions
In pursuit of stability

It has been a little time since I talked about Spartan Precision bipods and tripods.  That is largely due to my preoccupation with precision shooting during the last year and a half or so. 

I have two pieces of gear from Spartan: Ascent tripod https://alnk.to/28VEg3S and Javelin bipod https://alnk.to/gVPiEBd.  Both are very well made and rather quick to deploy, but they are not quite stable enough for the competition oriented endeavors I have been focusing on.  

For competition, it has been predominantly large diameter inverted leg tripods, like Zeiss' Max Duty kit and Triple Pull Ckyepod.  Inverted leg tripods are measurably faster to deploy and adjust when on the clock.  Triple Pull Ckyepod gives me the flexibility to shoot prone, sitting or kneeling in a pinch.

For hunting, however, I have been using the Spartan gear I listed above because it is light, easy to pack, fast to deploy and exceedingly well made.  It also really helps that the legs of the Ascent tripod come off for easier packing and for use as hiking sticks (that is highly useful when packing meat out and I like the idea of not needing to carry around separate walking sticks.

Most of my hunting rifles that I am not willing to attach a bipod to on a mostly permanent basis are set up for Spartan's Magnaswitch adapter.   It is slick, unobtrusive and can be used to snap either a bipod or tripod in.  It is not quite as stable at distance as a proper large diameter match tripod, but it is very fast to deploy and stable enough for my hunting purposes.

In the last few years, tripods have become an indespensible tool precision shooting when terrain is not conducive to shooting prone.  We use tripods for observation and target ID with binoculars and then immediately switch to using them for shooting support.  That is where things start to diverge a bit.

Some people clip the rifle into the Arca head of the tripod (that's what I have been doing lately).

Some keep a tripod table clipped in and do both glassing and shooting off of a bag sitting on top of the tripod table (that's what I started out with originally, but managing extra gear took too long.  I am more efficient now, so it might be time to re-visit this).

Some of the top competitors use two tripods for front and rear support (that's more gear manipulation than I am comfortable with).

When there is a front support, whether a tall bipod or a prop of some sort or just a convenient terrain feature, tripods are routinely used as a rear support to stabilize the butstock of the rifle.  That is what's commonly referred to as "tripod rear".

I have been trying to keep things simple and mostly just shot with the rifle clipped into the tripod.  I got quite competent at it when shooting at the range, but it has been a bit of a struggle in the last two matches (I also had some health issue in parallel, but I suspect that it had more to do with me screwing things up under time pressure than health concerns).

Still, while I continue to practice shooting with the rifle clipped into the tripod, both standing and kneeling, it was time to expand my horizons and try to master various variants of "tripod rear" support.

That is when I stumbled onto Spartan's CP Brace that offers a completely different approach to using a tripod for two point rifle support.

 It is a very clever idea.  They are, essentially, creating a bridge betweeh two legs of the tripod that has a compact tripod head attached to it.  That is the front support.  The rear support is the tripod's third leg where, similarly to the conventional "tripod rear" setup, you use your support hand to anchor the buttstock of the rifle to the leg of the tripod.

Like everythign Spartan makes, CP Brace is not cheap, so I figured I should take one for the team, do some experimentation and let you know what I find.

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Will HICAR and 6.5CM+Peak kill the M7 and 6.8x51?
One part of my hopes that it will. On the other hand, I hope that it will not.


Either way, it is going to continue to be a mess.

Last month, powers that be issued a solicitation for the HICAR program:
https://sam.gov/workspace/contract/opp/b1a57529aa574e8ba220e0311434733e/view

HICAR stands for "Hypervelocity Improved Capability Assault Rifle"

The solicitation is specific to SOCOM, rather than the larger branches of the military.  However, I strongly suspect that it is a harbinger of smarter things to come than the general issue of anything chambered for the 6.8x51 (aka as 277 Fury in the civilian world).

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Visiting with TacomHQ

This week was my kids' spring break, so we ended up going on a road trip of sorts.  We flew to Houston, rented a car, visited the Space Center, checked out Galveston, then drove up to Dallas.  My dayjob is in Dallas and I need to visit the office occasionally.  Truthfully, I need to visit the office more often than I currently do, but given my family situation that is a little tricky.

My kids are very good travel companions, so we decided to drive back to Albuquerque instead of flying.  The way the timing worked out, we had a day to make a detour and drive up to Arkansas to visit John Baker and his Tacom HQ operation.

I've known John for a few years.  He has visited with me about three years ago to talk about his their reticle idea and a few other things  

I think the reticle idea is sound and we should see a version of it in a scope soon enough.  I'll do a thorough coverage at that point.

This time around, the reticle was not the main reason behind my visit.  John is a creative guy and they do several interesting things there.  Everything they do is clever and outside the box.  For example, to the best of my knowledge, they were the first to come up with different ways to shift the POI for ELR shooting with their TARAC devices.  Alpha and Bravo TARAC devices use prisms to shift the zero of the optic, but a predetermined angle.  I have a flip-up Alpha TARAC set up to help with my subsonic ELR pursuits.  Bravo TARAC attaches the prism to the objective of the riflescope which works beter with large objective designs.  Since Tacom came up with it, the idea has been pirated by a couple of people, most prominently by Nightforce.  Technically, Tacom has a patent on it, but this appears to be a situation where a large company (Nightforce) shamelessly muscled a small company (TacomHQ) out of their IP, knowing fully well that they have more money for lawyers.  To be fair, John does not talk about it too much, so this is just a guess on my part (although I am sure I am going to get a nastygram from Nightforce lawyers for posting this.  They seem to really enjoy pushing small independent guys around).

Charlie Tarac uses a periscope instead of a prism to optically add slope for ELR shooting.  Delta Tarac does mostly the same things except it also offsets the line of sight laterally to avoid the mirage from the barrel.

The new thing with TARAC devices for this year seems to be an adjustable version of the Charlie.  There is a large side wheel that allows you to dial up to 900MOA of extra slope.

The reason I wanted to spend a little time with Tacom was the structured barrel.  I first ran into this concept a few years ago and thought it was an interesting idea.

Initially, my plan was to pick an appropriate action and have John make me a 300NM structured barrel for an ELR bolt action rifle.  I still want a 300NM and I might put one together eventually.  However, I never quite pulled the trigger on that for a few reasons.  One is that I simply have very limited use for such a gun.  I still want one, but I do not have easy access to a place wehre I can really stretch the legs of a caliber with that kind of capability.  The reason I wanted to put one together with a structured barrel is that they are are getting very good lifetime out of these and they are very easy to get to shoot properly.  

They have several version of the structured barrel design, but fundamentally they start with a 1.5" diameter barrel blank and mill out a bunch of material.  The most disinctive features are deep longitudinal cylindrical channels drilled parallel to the bore.  The start at the muzzle and go back toward the chamber.  They do not make it all the way to the chamber.  On the outer surface of the barrel, there are additional featuers designed for eliminating vibrational nodes and increasing surface area for better heat exchange.  There is quite a lot of technical informaiton on their website: https://tacomhq.com/structured-barrels/

Structured barrels look very beefy because they start out from large diameter blanks and they are decidedly not light-weight barrels.  However, by the standards of typical match barrels they are on the lighter side of things because of how much material has been removed.  Given their impressive vibration dampening advantages, a few months ago I shifted gears and started leaning toward putting together a large frame AR around Tacom's structured barrel.

With the precisely calculated mechancial structure, these barrels acomplish two very complicated things simultaneously: they are harmonically dead and they do not get hot.

During my visit, we shot two guns with structured barrels: a 6.5CM AR-10 and a 300NM bolt gun.

We did not do mag dumps or anything that silly.  However, after 10 rounds of rather rapidly fired 6.5CM, the barrel was warm, but not hot.  Temperature distribution was arguably the most remarkable part.  Using an infrared thermometer, it was easy to show that the warmest part of the barrel was around the middle (near the gas block on the semi-auto),  The breech end of the barrel was cooler to the touch and measure at a lower temperature.  Basically, the barrel never got very hot and whatever heat it accumulated was shed very rapidly.

The feel of the recoil impulse is really odd in that it is completely muted and there was no muzzle rise to speal off.  I suspect a part of the was the muzzle brake, but this lack of discernible resonant frequencies made the recoil cycle extremely gentle.  I was shooting an IPSC at 350 yards and the recoil impulse never moved the reticle off the plate.  I fired the last four shots as rapidly as I could pull the trigger.  Everything was on the plate.  The rifle was not light at right around 14lbs with the scope, but I expected a lot more movement out of it even with the muzzlebrake.  Most gas guns have this slight "pitchiness" to them and I saw none of that.

The 300NM boltgun was slightly heavier, but with the much more powerful round the recoil did move the reticle off of the target, but not by much. 

I never lost sight of the target during the reocil impulse and the feel was, again, very muted and controllable.  I am not sure how heavy the boltgun was, but definitely less than 20lbs.  I would guess it was around 17lbs, but I'll check with John.

While both guns were very impressive, the semi-auto shot unlike any other gas gun I have ever pulled the trigger on.  No gas gun ever has a truly free floated barrel, since there is a gas block attached to it.  However, the combination of the structured barrel with a unque way that John has of putting the upper together, is the closest I have seen to date.

He bonds the barrel extension to the upper receiver and then screws a shouldered barrel into that.  The upper receiver is the Aero M5E1 Enhanced since the beefy upper receiver extension helps decouple the handguard from the barrel.  Also, the rather beefy structured barrel needs a large diameter handguard which this is.  The gas block they make is a custom affair that is probably better described as "tunable" rather than adjustable.  It is not designed for making frequent adjustments.  The idea is to tune your gas system for perfromance and reliability, then leave it alone.  I plan to do exactly that.

Since I was heading this way, I brought the necessary pieces with me for John to put together a 6.5CM upper for me.   Originally, I was thinking of doing it in 6XC for local PRS matches, but now that I shot with it, I want to try using it for NRL Hunter as well.  I think I can make weight without too much trouble.  I'll stick with 6.5CM in order to make power factor for Hunter matches.

Saying that I was impressed would be a gross understatement.  The feel of this gun is absolutely unique and it has recoil control behavior of a 25lbs gun in a 14lbs package.  It is quite remarkable.  Now, in the grand scheme of things, with my nearly 300lbs bulk backing up the gun, recoil control is a relatively straightforward affair.  Since my kids were there with me, I had both of them shoot both guns and watched the recoil cycle very carefully.  The guns barely moved even with a much smaller human behind them.

I know it sounds like magic, but it isn't.  I am not a mechanical engineer, but I spent a good amounf of time going over the materials and thinking through what they are doing with these barrels.  The science behind it is pretty solid.  I am not seeing any obvious holes in their foundational reasoning.  The execution is difficult and the barrels are not cheap.  Aside from good ideas, it takes a lot of skill and know-how to make these.  There is a good chance I will make a permanent switch to these barrels on what I consider my "heavy" precision guns while sticking with the Fix as lighter guns they way they were originally intended to be.  When I say heavy, I mean sub-20lbs with everything and light is sub-13lbs with everything (scope, suppressor, bipod).

Before I wrap up, let's get back to the heat management argument for a moment.  The 300NM I shot was significantly accurate and it is at a bit over 2800 rounds.  That sounds outlandish given that is nearly triple of I would expect out of this caliber.  However, if the chamber never gets very hot, it is possible.  I really want to know how long the 6.5CM John is building for me will last.  I have high hopes.

 

 

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