Gas Gun Groups Thread

I didn't build my LMT to be a benchrest gun, but it's more than accurate enough for my needs. I live in a very rural area with a lot of land and some wide open spaces. I wanted a general-purpose rifle with a DMR type focus. Most of my 10-round 100 yards groups are in the .8" range, some in the .6's. It's a 16" Bartlein barrel from Craddock Precision converted to LMT by D wilson .

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Currently Working on a New Rifle 6.5CM 22.375" ( Don't ask ) have sunk some coin in the latest one and so far shows REAL potential .

These targets are from one of My Aero Precision platform builds and are Very capable . Preliminary powder evaluation .

Extremely happy with MY 129 gr. Hunting load , as all #20 shots went into .404" @ 278 Yd and Virgin card board backer (y)
 

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Diamondback DB10, 308 krieger barrel. CMC trigger. A nice rifle I’m happy with. Shoots better than I'm capable of.
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15 rounds fired quickly at 100 yards. Ammo was hornady whitetail 150gr, the cheapest ammo the gun store had on hand.
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5 rounds 175gr fgmm. Shows i have some stability issues to work on i believe.
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338 ARC fire forming brass 338 ARC improved. Standard case longer neck, improved shorter neck.
Only improves velocity of supers a bit, subs the long bullet takes up most of the powder space.
A 50 shot group 175 gr HP, Lil Gun, Starline Grendel brass, cut and formed, 10.5 S/D 2149 fps average over 50 shots in a gas gun.
The CMMG 338 ARC specific mags worked 100%.
 

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Details on build? Factory seekins barrel?

Lower: Seekins Precision
Upper: Seekins Precision IRMT
Handguard: Seekins Precision
Barrel: Proof 18" 6ARC
Bolt/BCG: JP Enterprises
Stock: Magpul PRS Gen 3
Buffer: JP Enterprises Silent Capture
Bipod: Atlas
Supressor: OCL Polonium
Scope: NF ATACR 4-16 MIL-XT
Scope Mount: NF Ultramount 1.54" height
Trigger: Geissele SSE
Springs/Detents: FCD
M81 Pattern: Triarc

I had the upper assembled by DWilson since I had them cerakote the barrel. Work done by DWilson was upper assembly and bed/shimming the barrel.
 
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Lower: Seekins Precision
Upper: Seekins Precision IRMT
Handguard: Seekins Precision
Barrel: Proof 18" 6ARC
Bolt/BCG: JP Enterprises
Stock: Magpul PRS Gen 3
Buffer: JP Enterprises Silent Capture
Bipod: Atlas
Supressor: OCL Polonium
Scope: NF ATACR 4-16 MIL-XT
Scope Mount: NF Ultramount 1.54" height
Trigger: Geissele SSE
Springs/Detents: FCD
M81 Pattern: Triarc

I had the upper assembled by DWilson since I had them cerakote the barrel. Work done by DWilson was upper assembly and bed/shimming the barrel.
How do you like the atacr 4-16 for that 6arc? I want one really bad.