Originally Posted by mdv1state
IO, you ever fool with TAC/75amax/223ai? Just getting started with the AI and wonder if I'm on the right track.


Not IO, don't even pretend to be, but this is my results.

In my 22 1/2", 8 twist rifle using WW brass, CCI400's and sans moly I got the following:

25.5 = 2970 fps
26.0 = 3020 fps and stupid small groups, as in 0.35" or so at 100 yards.
26.5 = 3090 fps but groups were a bit larger and pressures had to be getting up.

With the 26.0 grain load, primer pockets lasted forever so I called it load complete. That load, in your rifle, may of course blow your ass up so be sure to work up.

With the 50 I prefer H335, but with the 75 TAC wins. RL15 and H335 are good, but I got more consistent velocities with TAC.

Last edited by RickF; 08/01/10.
Anybody who seriously concerns themselves with the adequacy of a Big 7mm for anything we hunt here short of brown bear, is a dufus. They are mostly making shidt up. Crunch! Nite-nite!

Stolen from an erudite CF member.