My Department recently acquired 11.5" Suppressed rifles and I need some help selecting our duty ammunition. The manufacturer suggested we stay with 556 pressure loads if possible. I have found the following and would like your opinion on them and any other suggestions you might have. (What your Department issues would be helpful also) I would also need a practice round equivalent.

1.) Hornady 75 Grain TAP SBR #81295 and its training ammo #81292
2) Black Hills 50 Grain Barnes TSX and or the newer 62 Grain.
3) Federal 62 Grain TBBC or similar since this appears to be very hard to find.

Thank you all for taking the time to help with your expertise.