Re: My smallest 3 shot group
The load I use in mine is a 140 gr. Amax, CCI BR2, H4350 43.0 gr. OAL 2.850" 2820 fps.
Groups in competition are measured from center to center, the above one is .333" outside - .264" bullet diameter gives you a center to center of .069". For your 17 to equal this it would need to be .246" on the outside or smaller. If your 17 "clover leaf group was edge to edge exactly, it would measure some where around .170-.180" center to center or almost twice as big.