Made it to a different range today. A place with a more rifle friendly bench. No suppressor this time. Shot some groups at 50 yards with various ammo, but CCI Subsonic HP stands out again:
5 rounds:
10 rounds:
This particular range is "indoor" but the last 25 yards of the bays are open air, with only walls and baffles, so the wind was flapping the target, hung from the overhead trolley, and not stapled to a solid backer. I tried to time my shots in the lulls of the breezes as the target moved in the wind, but I think that may have something to do with the vertical dispersion. Some of it may just be the nut behind the butt. Either way, it looks like she shoots pretty decent with a couple different types of CCI ammo. I may track down some SK or Wolf target ammo, just for fun.
ETA: I just found out my brother bought a BMR... and a BXR... the scoundrel.