I used 220gr FNFB hard cast from Rimrock out of my 6" Springfield TRP 10mm. I got 1179fps out of mine while using 7.4gr Longshot and Winchester large pistol primer. Got a SD of 10, and a load that I would feel safe hunting anything in the lower 48 with. That wasn't a stock gun though - I changed out the recoil spring. Didn't actually get to use it on game, yet, but hoping to change that in about three weeks.

That load was accurate, but not NEAR as accurate as when I dropped down to 200gr XTP's over 7.9g Longshot. SD was 8 on that load, and man did it shoot!! That's now the load I carry every day. (Just for kicks, my notes say that I got pressure signs when using 8.0g longshot and a SD of 14.) But I haven't given up on the 220's yet. Still going to take them in three weeks, and hopefully test on a bear. I'll keep ya posted.