What powder do you think I should try next in my .300mag..? RL22,RL25,or H1000.Look at my post "Eye opener to say the least" That test was with factory ammo.

Whew, that is a good question. I have been usin AA3100 in my Sendero and obtain excellent (190MK @ 3k fps) velocity but that is in a 26" barrel. Need a powder that is a little fast burning for the 300 Win Mag. I will check it out.

Just so you know I have been using IMR4350.With it I can push the 180gr Speer SBT at 2687fps.

I will dig in my loadin manuals to see what is available. Will send ya an email....

T/C NUT, I also use IMR4350 and get my best accuracy with 165 Nosler BT. T/C NUT you have PM.
Albert