Last night was at the 200yrd range firing prone (slow) w/service rifle using my meticulously loaded rounds (69gr SMK, LC brass, CCI primer, 25.3gr RE15). First and second shots were 7s at 11:00. (Which is weird because a week earlier it was dialed in) Regardless, the second shot -according to the ShotMarket- said the velocity greatly varied from the sighters and first shot for record. The SD was at a whopping 1100! I dialed down the scope and was placing them in the 10s and on some I called Xs but got 9s all around the clock. The ending SD was at 131. Just weird- given the position, distance, rounds, etc, all my shots should have been in the 10 at least and the SD would be low teens or so.
I used steel pins to clean my brass and my mentor said if a pin is stuck in the case then goes down the barrel, it'll wreak havoc. I'm wondering if that happened, so want to scope the barrel. Is there anyone in town that scopes barrels or has a scope I can borrow?