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What am I doing wrong- alternating group sizes

I noticed something unusual that I think points to a failure in my mechanics. I took my Vudoo out this weekend to do a bunch of lot testing. When I went back to look at the targets I noticed that I was frequently shooting larger groups with the first five shots, followed by a tighter group with the second.
Shooting at 50 yards off a bipod and rectangular rear squeeze at bag (no ears) from sturdy but not rigid bench. Loading ten rounds, five to the first target, pivot right, and the second five to the second target.
I did have another shooter offer to watch me shooting, and the only thing he noticed was that I was tensing my shoulder in preparation for breaking the shot. I tried to consciously keep my shoulder down, but it didn’t seem to change the pattern in how I was grouping.
Any thoughts on what I might be doing to cause this?
Groups are all five rounds each, left target first, then shift right, usually without breaking position except for the slight pivot.
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SOLD WTS Sons of liberty EXO2 13.7 complete upper receiver.

WTS Sons of liberty EXO2 13.7 with pinned and welded Nox, Sons of liberty BCG and charging handle along with Magpul sights. Asking $650 Price drop $600 $500 PayPal or Zelle.

Looking to move this soon, this set up has about 1k rounds on It with no physical damage below descriptions are from sons of liberty directly.

Upper receiver:
  1. Barrel: Sons of Liberty Gun Works 13.7” 4150CoMOV 1:7 MPI HPT Barrel
  2. Caliber: 5.56 NATO Chamber
  3. Barrel Steel: 4150 CrMoV (Chrome Moly Vanadium per MIL-B-11595E)
  4. Twist Rate: 1/7 Twist Six Groove
  5. Gas Block: .750″ Gas Block Journal with an appropriately sized gas port
  6. Barrel Finish: QPQ Corrosion Resistant Finish
  7. Barrel Extension: QPQ coated M4 Feed Ramp Extension
  8. High Pressure (proof) Tested (HPT)
  9. Magnetic Particle Inspected (MPI)

Sons of Liberty Gun Works Bolt Carrier:

HPT/MPIBolt:

  • Precision machined from Carpenter Technology No. 158 alloy,
  • Heat treated per mil-spec,
  • Shot peened per ASTM B851/SAE AMS2430S,
  • Vibratory tumbled
  • Individual high pressure/proof (HP)
  • Full Auto test fired as an assembly
  • Individual magnetic particle inspection ASTM E1444/E1444M (MP)
  • Markings deep laser engraved (SP=Shot Peened, HP=High Pressure Tested, MP=Magnetic Particle Inspection.)
Extractor:
  • Precision machined from 4340 tool steel alloy per SAE AMS6415T/AMS6484D (vs 4140),
  • Heat treated
  • Shot peen per ASTM B851/SAE AMS2430S.
Extractor Retaining Pin:
  • Precision machined and ground S7 Tool Steel
  • Heat treated per ASTM A681-08
  • Shot peened per mil-spec print
  • Manganese phosphate
Extractor Spring:
  • Tactical Springs/Sprinco 5 coil, ASTM Grade A401 Chrome Silicon wire stock
  • Heat treated
  • Stress relieved, Molybdenum-Disulfide infused
  • Cryogenic processed (all post winding)
  • Mil-spec black insert/synthetic elastomer extractor buffer (nitrile-butadiene, shore hardness 80+/-5 durometer per MIL-PRF-6855)
Ejector:
  • S7 Tool Steel
  • Heat treated per ASTM A681-08
  • Shot peened per Mil-Spec
  • Manganese phosphate
Ejector Spring:
  • Heat treated
  • Mil Spec
Gas Rings:
  • Standard stainless steel per Mil-Spec X3
Carrier:
  • Machined from AISI 8620 aircraft qualty alloy per ASTM A108/A322-13
  • Full auto profile
  • Heat treated
  • Carburized/strain relieved, hard chrome bore
  • Precision ground gas key interface
  • Sons of Liberty Battle Flag logo deep laser engraved
  • Manganese phosphate
Gas Key:
  • Machined from 4130 chromoly steel alloy per ASTM A108/A322-13
  • Heat treated, hard chrome internal
  • Manganese phosphate
  • Permatex sealed
  • Grade 8 hex screws torqued and staked all per mil-spec
Cam Pin:
  • Precision machined 4340 chromoly steel alloy per SAE AMS6415T/AMS6484D
  • Heat treated/processed per mil-spec
  • Manganese phosphate
  • Solid film lubricant applied and cured per mil-spec
Firing Pin:
  • Precision machined 8640 steel alloy
  • Heat treated/processed per mil-spec
  • Hard chrome plate
Firing Pin Retaining Pin:
  • Precision machined from 1038 carbon steel
  • Heat treated/processed per mil-spec
  • Manganese phosphate
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When is a chamber too large?

I have a barrel problem. I bought a prefit barrel in 308 win to put on an action I have laying around. I put it on and shoot ~100 rounds through the thing. It was an ok shooter, considering the profile. However, when I went to size the brass it was very difficult, to the extent that it stripped the threads on the Lee spline drive die bushing (aluminum). I checked the Lapua brass (which has been fired about 8 times through a different rifle) at the .200 line and it's measuring 0.4740" with calipers that claim to have 0.0005" accuracy. I fired some cheaper Winchester factory ammo and they come out measuring 0.4735" at the 0.200 line.

So it appears the chamber is wallowed, but only ever so slightly, perhaps 0.001 to maybe 0.002 depending on the spring-back of the brass. One one hand, it's oversized and I have to find another way to size the brass. On the other, it's not that bad. Where do people draw the line on sending it back to the smith? And will this degree of wallowing compromise the brass?

Thanks in advance for your advice.

Accuracy One premier primer guage odd Measurements

Recently bought this and not sure why I am getting some weird measurements in primer pocket depths. I have new and once fired brass from Lapua, Alpha and Nosler in 6.5 Creedmoor with large rifle primer. When I measure pocket depths in all 3 with Mitutoya calipers compared to this tool I get consistently about 0.005 less depth than calipers. I would assume this Accuracy One tool is more accurate. However, this 0.005 less is unreasonable since most sources have said depths should be about what my calipers say. Example for caliper readings: Nosler 0.127, Lapua 0.127, Alpha 0.131.
When I use the tool to measure loaded rounds it is spot on.

Is there a gray area between a SBR & a Pistol or is the definition cut & dried?

I am considering a suppressed 338 ARC as a deer hunting firearm. Sticky point per state game laws is the ammo in a shoulder held firearm is required to use ammo that produces 1000 ft pounds at the muzzle. Whereas a hand gun is only required to use ammo that produces 500 ft pounds at the muzzle. This may suggest that I may not use subsonic ammo from a shoulder held 338 ARC though the same subsonic ammo is perfectly acceptable from a hand gun.

What is the difference technically between a 12" SBR & a 12" hand gun? Same question applies weather I am asking about a bolt action firearm or an AR.

SOLD Sightron SVIII 5-40x56 LRM reticle

Sightron SVIII 5-40x56. It has 10 meter parallax, 40mm tube, LRM reticle and Audere one piece mount. Thing as shown weighs in at almost 4 pounds. $1800 shipped Paypal G&S I'll eat the %. That way you're protected as so am I. Selling as I think my PRS days are behind me and postponing the ELR wants. I'll answer any questions I can

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Firearms Sako TRG-22 308win

Don't want to, but need to free up some funds for another project.

Selling a Sako TRG-22 in 308win with a 26" barrel. I bought it used, original owner said they shot it around 200rds. I put 15rds through it. Shoots great and with the muzzle brake it's very soft recoil. Will come with a Cadex MX1 muzzle brake. It is the phosphate version and should have a ton of life left. I took it out today and tried a group at 110yds with what I had left of a partial box of FGMM 168gr.

Asking $2,500

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Maven, Leupold, Trijicon, NF

Looking for my first high end scope. Want to keep it to these 4 brands, been down a ton of rabbit holes already but have it narrowed down. I would consider myself a mid range shooter in the 300-500 range, with longest take on a deer being 700. So 7-800 yards is important. This is an out west gun where I have never shot anything under 300yds. Light properties are important, along with clarity and durability. We do a lot of turret work so that important.

These are all the same price relatively, with the Maven on the low end and the NF on the higher end.

Maven RS.5 maybe RS.3, 4-24x50
Trijicon Tenmile HX 5-25x50
Leupold VX5HD 4-20x52
NF NX8 4-32x50

Maven and Trijicon both have a 56mm reticle that looks attractive as well.

Sort of hesitant on boutique brands like Maven, only been around 10 years, long term warranty claims. NF almost falls into that, as well as being heavier and people not liking the reticle. Ive read some of the zero issues with Leupold, but dont know how much stock to put into it. The one brand I have not any rumor mill stuff from is trijicon

GOD BARRELS AND TRASHMUNITION

I have three rifles which exhibit these traits at 100 meters…

1) An Accuracy International Dave Tooley barrel that shoots bugholes (this one performs really well out to 400 meters, I’ll be really sad when I finally shoot the worth out of it) with Cheaper than Dirt “XM80CS Bulk Ammunition” from grud knows when,

2) A Steyr AUG with one of the newer 20”, 1/7, 1/2-28 barrels that gets me 1 - inch groups using bulk Green Tips also from Cheaper Than Dirt (Sandy Hook era) with the Donut of Death reticle,

3) An AR-15 with a 20” White Oak Armament 1/8 barrel that gets me 2” groups using the above trashmunition.

Has anybody figured out what causes the stars to align and yield such results with ammunition that should be in the dumpster? :ROFLMAO:

All of my other rifles, both cheap and pricey, yield dinner plate groups with the above.

Probably a rhetorical question, but I thought I’d ask :ROFLMAO:

Firearms SOLD - Vudoo 5” 9mm Priest pistol TYD (FFL) $3600

For sale - Vudoo 9mm 5” Priest pistol with SRO AND 4 MDX mags. Odered it new from Vudoo 10 months ago and shot it very little 1500rds. Runs flawlessly and is in excellent condition, sellling it to build out a PRS rifle build so no trades at this time. The iron sight insert co-witness with the front sight from Vudoo. Couple of small wear marks in the cerokote on the grip where my ring rubbed it.
Steel grip, tool less guide rod, SRO 2.5 MOA and bull barrel.

If you have questions or want more photos let me know.

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Help with Zeiss S5


No response to that thread. Can someone please confirm that this is by design?

PS: I did submit a ticket to Zeiss as per @DeathBeforeDismount ’s suggestion. But it’d be a relief to find out before Monday.

Accessories Lowered - Big Ole Barrel Sale

Preferred Barrels
Coup De Grace 16.5" 277 Fury 8T 5/8x24, New - $700
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Proof Carbon Factory Offerings
Defiance Ruckus 22" 6 Creedmoor Sendero 7.5T, New In Box - $700

Bartlein Blank
Bartlein Carbon Blank, .338 bore 16.5" Finish 7.5 T Medium Palma, Brand New, was to be a 8.6BLK - $800
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Factory LMT
6.8 SPC MP CL 10T 5/8x24, Like New, but I can't recall where I got it nor how long I have had it - $250

Accuracy International:
Factory Bartlein M30 BLK 300 PRC 26" 8T, New Take Off - $800
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Factory Bartlein M30 DE 6.5 PRC 24" 8T, New / Unfired - $800 (Includes SR MB)
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Texans pay tax.

Check, Wire, ACH, Zelle or CC + %.

No Trades

Preston
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