I posted this on the thread below, "How Many Grains of Trail Boss....". So I thought I would repost it here for you.

I've tried 5 different powders for subs. 220gr Nosler BTHPM and 10.9grs. of 1680 turned out to be the best load by far. Consistent SDs and primers, consistent velocity, and great accuracy.

The worst was Lil'gun. Big swings in SD, some primers looking like they were just inserted (except the firing pin divot) and some looking like an overcharge (flat. I mean really flat).

All loads were individually weighed using my Ohaus M5 beam scale and LC converted brass.

Trail boss will not cycle my carbine. TB has it's nitch but not in this application.
IMR4198 and H110 worked OK but 1680 was noticeably more accurate.

For plinking loads I tried several different powders and I settled on 150gr Sierra FMJBT Gamekings with 17 grs of H110. It's a very accurate load.

For Whitetail hunting I settled on Nosler 125 gr Ballistic tip Spitzers with 21.5grs of 1680.

Dave