Alright, I’ve put about 60 rounds through my recently bought used M1A. I haven’t been able to put a zero on it since then. I’m putting 3-shot groups in 2-2.5" at 100 yards from a prone position with SA milsurp.
This doesn’t seem like a problem except that fact that I group well, then adjust my sights to center mass but the next group is always somewhere else completely off of where it should be. The next group is still 2-2.5" though.
My sights aren’t loose. Any ideas what the problem could be?