Have you tried letting the barrel cool completely between shots. My #1A 7x57 (with it’s favorite load) will put the first 2 shots dead on in about a .75” group then throw the third an inch or two higher if I don’t let the barrel cool off. If I wait about 5 minutes between shots it will group all three within about an inch. This doesn’t really bother me as it’s highly unlikely that I’d be sending 3 rapid shots down range in a hunting situation.
Also, are you firing your first shot from a clean bore? Quite often a shot from a squeaky clean bore will impact quite differently than those from a slightly fouled bore.
If starting out with a clean bore, I always fire a couple of fouling shots, let the bore cool then proceed with my serious shooting. Once I’ve sighted a rifle in for hunting season it doesn’t get cleaned until after the season.
Last edited by Bobber257; 09/19/19.
