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  1. M

    Installed Muzzle Brake Decreasing Accuracy...

    Just ran back across this and I haven't had a chance to get back out with it to test the grouping with the AAC brake. Procovert45, thanks for the heads up, I've been out in the GA mirage and it certainly can make things really difficult. Just for seeing how the gun groups with the brake...
  2. M

    Installed Muzzle Brake Decreasing Accuracy...

    I installed mine myself with the supplied shim kit. I wanted it as close to flush with the barrel as possible so I used the best shim/torque ratio I could without over tightening to accomplish this goal. I tightened it to snug with the right shim combo to allow it's proper verticle alignment...
  3. M

    Installed Muzzle Brake Decreasing Accuracy...

    You're not alone, I had exact same issue with exact same rifle. 700 AACSD set in a manners T2A stock, action trued, factory barrel threads, etc. .5 minute groups prior to AAC Blackout install, opened up to about 1.5 after. Removed brake, shot 4 5-Shot groups that closed back up to .5. Results...
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