All shooting was done through my RRA CAR UTE. 16" non-chromed Wilson barrel 1 in 9" twist. Average of 10 shots, with hi-low velocity difference. Chrony was set 10' in front of muzzle.
Average of 10 shots, with the difference from high to low velocity.
Winchester 55gr 40rnd bulk pack - 2856fps 147fps
Winchester 62gr - 2786fps 84fps
S&B 55gr - 3076fps 62fps
Federal/LC XM193 - 55gr 3094fps 39fps
PMC 55gr - 2720fps 150fps
Rem-UMC 55gr - 2857fps 59fps
Silver Bear 62grHP - 2907fps 108fps
DynaMax 55gr (reloads) 2946fps 156fps
My gun prefers the PMC, with the S&B a close second. The Silver Bear stuff ejected quite a bit further away & to the back compared to all other ammo. I suspect this is due to the steel cases. The Wal-Mart Winchester 55gr 40rnd bulk pack ammo had the poorest accuracy by a wide margin. What truely amazed me is that @100yds, all the ammo had point-of-impact (POI) very close. I mounted a Tasco 30mm Red-Dot for the testing.