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USMC Unertl locking in the parallax on the objective

Ok... call me a homo! Yes I'm picking on myself! I should be able to figure this out but for whatever reason it's kicking my butt!

So, I shot the M40A1 today and wanted to fine tune the zero a little more as well as set the focus etc... after shooting it at my 117-yard target I then went to the steel plate at 430 yards. If I get the chance, I might be able to shoot the rifle in a vintage sniper rifle match in early Dec. out in MT. That match is shot at 300, 385 and 500 yards. So, I want to lock in the parallax/focus on the objective. Here is where it is at... but how do I lock it in without it moving on me? You can see the gap at the very front of the ring and behind the larger diameter ring.

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This was my last group for getting a final zero on it at 117 yards. Yes... I was a homo on that high round. Probably too much time playing with all the adjustments and just blew it. More I think about it I didn’t blow it. I did bring the zero down on the scope with the allen wrench and locked it in. I needed about 1.5” down and tried to move it about 1 minute… I think I got it right! Only needed one windage adjustment after my bore sight job and first sighter…never touched the windage dial after that. So the scope is tracking and holding zero!

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So happy with the 117 yard zero... I moved the elevation dial to 4 and initially moved the fine tune adjustment up 1 click also but knowing the 169smk have a higher bc than the old 173gr bullets and even more than 175smk... I decided to take the 1 click off the fine adjustment. On top of all that for the most part I've been having a tail wind mostly speed wise from 6-11mph. Glad I took that fine adjustment click off.

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So, for 37 rounds down the barrel... I'm digging it! Average velocity is coming in at 2687fps. No need to run it any faster.

So, thoughts on locking in the objective ring without moving the whole set up please.

Curio and Relic license

Surely someone here has one, has had one, or knows someone who does/did.

What are the in's and out's of having one?

Are you required to keep meticulous records like a regular FFL? (A good idea anyway, but still)

Are you subject to bullshit random inspections any time someone at ATF gets bored?

Any caveats that aren't generally known/discussed?

It's a $30 application and I have a bit of a fetish for old military rifles... So I was curious.

Mike

did i made an error while mounting this scope?

Hi, i am probably massively overthinking this but, since this is a pretty expensive rig, i want to set it up in the best way. I mounted the scope following a strict procedure (the crosshair is level to gravity and to the top ring bubble, everything is torqued down to specs). It was a long process and i wish i won't have to do it again.

Using the typical criss cross pattern method i torqued every top ring screw to 25 in/lbs with these hawkins light tactical 30 mm rings.

At the end of the process i was very satisfied because the system crosshair-bubble is perfectly leveled to gravity. I noticed that the gap between the front and rear rings is not perfectly even. I read somewhere that someone is even using feeler gauges to check fo uniformity in the gaps. Since of course having the exact identical gap is impossible, i want to understand if in my case the gap differences are acceptable or not.

I measured with a feeler gauge: rear left 0.9 mm (0.035 inches) gap, rear right 0.9 mm gap, front left 0.80 mm (0.031 inches) gap, front right 0.85 mm gap. So basically there is a max 0.1 mm (1/256 inches) difference between the rear and the front rings, while there is a max 0.05 mm (1/512 inches) difference between left and right.

i will post some pics. The gap is not easily visible in these pics i think but when looking in person i notice it.

what do you guys think?

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SOLD Leupold VXR Patrol 1.25-4

Looking to sell this one off as I have another LPVO for the gun it was on. Awesome little optic that I don’t think Leupold makes anymore. It features the firedot reticle.

$300 shipped with the cheap UTG QD
rings. No box. These were $600 new.


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Rifle Scopes Going from Razor gen 6-36x to LHT 4.5-22x

Question for anyone who has used these scopes side by side.

I am thinking of downgrading my gen 3 6-36x to an LHT 4.5-22x, mainly to save weight. The 6-36x has features I don't really need such as a quick rezeroing, loads of magnification, loads of elevation travel, and an exposed windage adjustment. I appreciate these features it's just that I can live without them.

Things I don't want to lose out much on are optical clarity, low light performance, easy to use illumination and elevation adjustments, and an easy to see reticle.

I find on 6x the gen 3 reticle is a bit difficult to see unless it is illuminated especially in bushes and what not. I had thought the LHT had a thicker reticle but it seems to be identical which I find a bit concerning for a scope that goes down to 4.5x. Also the illumination control sounds weird to me and I haven't seen what the rev indicator looks like if you go above one rev/6 mrad.

Would I be disappointed in making this transition based on my criteria?

KAK 1n5 twist 11.5" v. 1n7 twist 11.5" , both suppressor ready, .076 GP.

KAK has both these available, and for some reason I am interested in them.

I typically prefer precision oriented complete uppers, when I buy a complete upper. ( most spare uppers I own I have assembled with precision oriented barrels. )

FWIW... I don't expect a KAK 11.5" upper to be a MOA "everyday" shooter. I accept it for what it is.

Both are MLGS.

1n5 twist, Fluted SS 11.5" barrel

1n7 Twist, phosphated 11.5" barrel

I will buy or the other... any valid reason NOT to get the 1n5 twist rate ?

Is the 1n5 twist rate just to fast for current match grade bullet jackets ?

I like the heavier , fluted profile of the 1n5 version... but again is that twist just to fast for any thinner jacketed 77gr match bullets ? ( first time with that fast of a twist )

Given the lack of meaningful dwell time of the gas system and GP size... could a LtWt BCG, low mass buffer setup "possibly" help allow it to function without a suppressor ? Any thoughts would be helpful in my choices.

And thoughts on a muzzle device ? ( until the suppressor arrives )

Recoil mitigation , and staying on target, flash suppression, would be the goals here. Surefire Warcomp ?

6 ARC Shaw barrels

I'm looking at building a 6 ARC. I have a 12.5" Grendel but its kinda slow. The gun will be for coyote hunting hence the shorter barrel, it will also be suppressed. So I'm thinking of swapping the barrel for the new kid 6 ARC. I don't see a lot of short barrels out there but I found Shaw Barrels has some. Curious has to how the quality is with Shaw? Their price seems on the low end.

SOLD WTS: Ruger 10/22 Hammer Forged Barrel, Archangel, Kidd Bolt/Ruger BX Trigger, Hawke 3-12X50 Scope, Harris

Hi Folks,

I am selling my nicely customized Ruger 10/22 rifle. The barrel is the Ruger heavy forged that originally came in Ruger wood stock. The bolt is a Kidd stainless matte and trigger is a Ruger BX, while the new stock is a Pro Mag Archangel. The Scope is a Hawke Optics 3X-12X x 50mm and the gun is supported on a Harris Bipod. This setup is an excellent shooting platform off the bench or field. I am including 2, 10 round magazines along with the original Ruger bolt and flip up scope shades. I put 400 rounds through the barrel during my ownership, but do not know the actual round count as I purchased it pre-owned. No box or accessories for the Hawke scope (the way I bought it). I will tell you this is an extremely accurate 10/22.

Sell the whole rig as pictured for $675. or will sell everything minus the scope for $525. FFL to FFL only. Payment is by USPS money orders, bank check, or personal check (must clear first). No Paypal, Zelle or Venmo. PM here for questions. No trades, please.