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10/20/2017 1:01:18 AM
9/22/2017 12:11:25 AM
Posted: 9/13/2005 5:00:17 PM EDT

Maybe somebody has some ideas for me.. USPf 9mm about 20,000 rounds...all of a sudden it is shooting 3 inches low at 10-12 yards from a supported benchrest position...still okay right and left just consistently low. The groups of 15 all touch, just low. Anybody have any ideas?hinking.gif
Link Posted: 9/13/2005 7:14:19 PM EDT
Shoot Higher...?? Just Kidding.. Have you checked for barrel play when locked up? Have you changed ammo..? When you say all of a sudden did this just happen overnight or has it slowly been getting lower?
Link Posted: 9/14/2005 6:27:31 AM EDT
[Last Edit: 9/14/2005 6:29:20 AM EDT by tpeck]
"All of a sudden"...well, the last two IPSC matches have not scored as well as my average, but I figured that is just me. Same with the two practice sessions, thought it was just me. Total of about 400 rounds. With a bench rest test yesterday, discovered the hitting low issue. Same ammo, have ruled out ammo for reasons not worth taking the time or space here; i.e. other USPc not a problem, etc.
Link Posted: 9/18/2005 6:23:26 PM EDT
Try some commercial ammo if you're reloading & also have a different shooter try them too. I cannot think of a mechanical reason a semi would just jump up & start doing this on its own?
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