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  1. S

    Weird first shot inconsistency with can

    Im posting here as a last resort to see if anyone has an explanation for this odd behavior. I have a 308 scar 17 that has been a good reliable 1" gun for a long time. I recently added a sandman S, and my groups actually improved to a consistent .8-.9 which is great for a scar, but the first...
  2. S

    Storing barrels long term

    I have 5 rifle barrels I need to figure out how to store properly. Humidity is a huge problem where I live, and I'm constantly knocking rust off of guns, spraying stuff down with barricade, and have dehumidifiers all over the place. 3 of them are sealed in plastic bags from the factory so I...
  3. S

    308 with accuracy/consistency issues

    I'm thinking I'll see if I can send the barrel back to have them determine if it's out of spec. Funny enough, talking to a friend that just built 3 ar10s in different calibers, the only one that isn't performing as expected out of the gate has a Rainier barrel on it. It doesn't sound like it's...
  4. S

    308 with accuracy/consistency issues

    Bags and bench mostly, but I tried a bipod off the bench for a few groups.
  5. S

    308 with accuracy/consistency issues

    I'll take some when I can. I looked at the crown when I pulled the muzzle device off and it looked normal. Lots of build up at the muzzle, but nothing changed when I cleaned it up and shot it with the comp removed entirely. Just a big poi shift but no accuracy improvement. The groups today were...
  6. S

    308 with accuracy/consistency issues

    I made the load BCP posted above to see what it would do just for something to try. 4 shots at 2.71 moa. I let a friend shoot his hand loads that work well in his rifle out of mine (berger 185s), and 3 shots measured 2.47 moa on that one. We single loaded everything as I did last time on both...
  7. S

    308 with accuracy/consistency issues

    I'm using an adm delta mount. I moved the optic to a small frame AR to test and it was fine, but I didn't try a different scope on the 308.
  8. S

    308 with accuracy/consistency issues

    I can borrow a 6.5 ar10 from a friend that is well proven to test my shooting ability with it. That might be a simple way to see if I'm influencing something. I was hoping the other shooter from today would see different results, since he's more experienced than me, and also "gets on the gun"...
  9. S

    308 with accuracy/consistency issues

    Thats one 8 shot group. I had to come off the gun each time to load individually for that test. There are actually 5 rounds in the bottom 3. It shot the 3 high shots first, then the group moved down for the last 5.
  10. S

    308 with accuracy/consistency issues

    I did some additional testing today. I shot 8 rounds of berger 175s loading each round individually to control for the ejector issue mentioned above and it shot right at 1 inch over 8 shots. Picture attached. I only marked 6 shots because the other two were in the same holes as 2 of the other...
  11. S

    308 with accuracy/consistency issues

    Understood. I'll take a look at the ejector tomorrow.
  12. S

    308 with accuracy/consistency issues

    Bushnell DMR II 3.5-21
  13. S

    308 with accuracy/consistency issues

    Would there be a visible case sign to look for or would I just need to do it and see what happens? Can you elaborate on this some? What is fundamentally different about shooting an ar10 vs a bolt gun or ar15?
  14. S

    308 with accuracy/consistency issues

    I put the optic on another rifle and it shot normally. Good to know that's a pressure sign. I've never seen that before on any brass.
  15. S

    308 with accuracy/consistency issues

    https://ibb.co/mhQv5M1
  16. S

    308 with accuracy/consistency issues

    I tried some 168 gmm when I first built the gun. I didn't know I had a problem back then so I didn't pay much attention to exactly what it shot, but I know it was over an inch. I don't recall seeing any wild flyers, but it wasn't sub moa. I remember thinking it was odd that round didn't group...
  17. S

    308 with accuracy/consistency issues

    I'm hoping someone more knowledgeable can help me decide my next move. I have a home built ar10 that is very inconsistent. Major parts are: Aero m5e1 builder kit Aero BCG Rainier Ultramatch mod2 18" 1:10 308 barrel Superlative arms gas block Geissele ssae Jp buffer system When trying to work...
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