Check the primers to make sure they are even. Not that a small change in velocity would be obvious in the primer but worth a look.
Also how long between shots, did you check the target between groups? Barrel may be getting warm.
Check the primers to make sure they are even. Not that a small change in velocity would be obvious in the primer but worth a look.
Also how long between shots, did you check the target between groups? Barrel may be getting warm.
Remember the 7 “P”s; Pryor Preparation Prevents Piss Poor Performance.
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