DarkLordOfOptics
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A bit more on scope mounts
and why there is no free lunch
September 07, 2024

Looking at different mounts is sort of an ongoing thing for me.

There is no perfection in this world, but some get close.  I have been pretty open that I am quite impressed with the Area 419 mounts, for example, and I now have two of them, one 34mm and one 36mm that my Tangent 7-35x56 lives in.  Over time, I expect to have more of them.  They work well and seem to ahve the fewest compromises of all of the single piece mounts I have tried to date.

That having been said, I do not plan to stop my continuous overview of different mount designs.  One that keeps on popping up is the M-Brace mount by American Rifle Company.  I have one and in my use it has worked rather nicely.  However, I live in what qualifies as a fair weather state.

Also, I was looking into LRF mounts and the LRF bridge on the M-Brace is very nicely done.

Last time I talked about these mounts, I mentioned that I am not a fan of hinges.  To me, it is a solution looking for a problem.  Also, I heard of several people having issues with the mounts cracking around the hinges when it got really cold.  That sorta made sense to me and re-inforced my suspicions about hinges, especially since the single screw in the ARC design is tightened to a fairly signifiant torque setting.  The reason people like these mounts is that it is a single screw design.  However, there is no free lunch.  Something somewhere is going to be stressed.

Up until recently, I have only heard of ARC mounts/rings cracking in the cold second hand.  I had it on my list to do some experimentation, but now it looks like I do not have to.  A friend of mine lives in a colder state than I do and he sent me a few pictures where two of his M-Brace mounts developed cracks around the hinges.  He is an avid competitor and he spent quite a lot of time in horrid winter blizzards trying to shoot a match or two last winter.  He looked at two of the M-Brace mounts he has and sent me these pictures.  Now, this is not hearsay.  This is directly from someone I know who is a serious shooter and has good attention to detail.  I have high confidence that he did not screw anything up when mounting the scopes.

Now, does that mean that M-Brace mounts are a no go and all that?  Absolutely not. 

These are very good mounts, but if you spend a significant amount of time in temperature extremes, this is something to consider.  Also, there is a LOT of these out there and I have only been able to dig up a few occasions when this happened with only two being from someone I actually know.  This is clearly very uncommon.  By comparison, I have seen FAR more issues with Spuhr mounts.  So many more that I lost count.  We are talking an order of magnitude or two.  With the M-Brace, it is likely a combination of extreme weather conditions and a tolerance stack up where the mounts were on the tighter side of things and then went through multiple extreme temperature sycles. 

While I dislike the hinges, what I really like about the M-Brace mount is the accessory mounting method.  That serrated itnerface is robust.  The way the LRF bridge mounts is likely among the sturdiest in the industry and has the least likelihood of transferrign any shock to the scope body.  If I were looking to set up a weapon mounted LRF on something with serious kick, the M-Brace would definitely be in the running.

What I do not like is that I can not remove the scope from the mount without removing the bridge.  Then again, that's mostly a problem for people like me who mount and re-mount optics all the time.

Once the LRF bridge is on there, two of the accessory mounting points are occupied.  There are two on the bridge itself, but they are less useful for me since they are a little higher up.  I would normally want a level on there, but I can't see it because of the side focus turret. 

Beyond that, my only real complaint with the M-Brace mount is that it is relatively heavy.  Then again, once you are dealing with a three pound precision scope and a pound-plus LRF, four extra ounces of aluminum in the mount is not really a major issue.

Ultimately, we choose gear based on the application and accept compromises where appropriate.  Everything has some sort of a compromise to it.  WIth the M-Brace, it appears to be the same thing that makes it stand out from other mount designs out there: the hinge.

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Blast From The Past: Millett ZoomDot RDS

I dug this thing up purely by accident. It has been a long time since I used it for anything, but I am thinking I should, especially as I work on a magnifier video.

MIllet's ZoomDot was a unique red dot sight that had auto brightness and variable dot size from 1MOA to 10MOA.

Early ones, like mine, were made in the US. Millett had some aspirations of selling these to the US military.

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I reached out to Leapers to relay the issues I found with reticle sizing and tracking in the 3-18x44 scope they sent me.

They confirmed that the scope I have here is an engineering model. They also talked to engineering and, apparently, they found the same issues I did with the mrad model and fixed them for the production run.

The MOA model (https://alnk.to/eZIJo9a) is, according to them, spot on. The issues were only present in pre-production mrad scopes.

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Memorial Day Sales

I am beginning to see some early Memorial Day Sale emails in my inbox.
If I see anything interesting, I'll add it to this post which will be pinned to the top, rather than inundate you with incessant "it's a sale!" emails. Better keep it all in one spot.

The first one I see is from Opticsplanet. https://alnk.to/cwU58u8
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Eliminator 6 gets you $400 of bonus bucks to use on something else. https://alnk.to/flycPy8

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First PRS Match is behind me
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My first PRS match is officially behind me.  It was, I think an officially sanctioned regional PRS match at the shooting range called Del Norte about an hour from me (just east of Rio Rancho).
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I do have to admit that I really enjoyed shooting the match with the MiniFix.  So much so, that I am seriously thinking of building another one for myself, since this rifle is technically my daughter's.

The closest shot we had was a bit over a couple of hundred yards.  The furthest was around 1150.  That was a bit challenging for the 16" barreled 6ARC, especially since the terrain there is tricky and wind is doing strange things.  Morning was relatively quiet wind-wise, but then the wind becamse gusty with changing directions.

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Getting back on the horse, little by little

My original plan was to do a livestream on Thursday of this week, but I think I'll push it out to next week.  A few days at home is doing wonders for my recovery, but my voice is still not quite there.  I do not think any of you are looking to listen to me cough for two hours straight.

Also, I am going to try to shoot that local PRS match this coming Saturday, so doign a livestream next week after the match is likely to be more productive.  It is my first one, so I fully expect that I will screw it all up.  It should be a good learning experience.  I do not have a dedicated PRS rifle and I am not looking to set one up jsut yet.  If I like it, I'll put something together, but as far as competition goes, my focus is really on UKD matches like NRL Hunter, Competition Dynamics, etc.  My 6.5CM is not back yet, so I'll just shoot it with my 308 FIx.  It is not ideal, but it will do just fine for my purposes.  I am in no danger of winning anything either way and this will stress my ability to read wind.  A secondary purpse here is that I am not 100% certain what rifle I will take on a mule deer hunt with later this year, but it will be either something new to test or this 308.  Now that I think about it, the 308 is going with me regardless either as a primary rifle or as backup.  The rifle shoots, so if I miss, I know it is on me.

For the match, I have Burris XTR PS 5.5-30x56 scope on the 308 Fix.  I think the way they did the heads up display in these is a meaningful improvement over conventional riflescopes.

https://alnk.to/d3EjPHC or https://alnk.to/8iVRlGN

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In parallel, I am looking at the replacement AAC ammo (they replaced the faulty ammo and I have chrono results on it) and testing the optics of the 40mm scopes in parallel.

 

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A first look at Steiner H6Xi 2-12x42
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