Loades some test rounds using H380. 3 rounds each.
38.5, 39, 39.5 40, 40.5, and 41 grains. cci Br-2
Sierra 52gr HPBT. Had one group 40grs. @ 100 yrds measure around .4"
what I found was that point of aim all 6 groups were with in a 1/4".
had any similar results.

i bought an Axis last year in 6.5 creedmoor, acts pretty much the same, very happy with the rifle.