My best 3 shot group off hand @ just over 100yds, Leupold 2.5x Marlin 1895G. I was aiming at the top point of the steel.
RP Brass
WLR Primers
300gr Laser Cast
25grs IMR-sr4759 - scooped with Lee dipper, did not weigh
I had 4 rounds left so I shot them making a 7 shot group. The round low right was round #5.