you can take that titegroup up over 6.0
if your gun will take it [ i would have to check my #'s] but think i went up to
10 gr or so in the colt and 44 mag, with 250 gr boolits.
i then went to 800-x, then to 2400, and am at 1500 fps with cast at 8' from the
bbl of my 92.
aint gonna try it in my usfa's though