jimbobborg
Oddball caliber fan
I need a recommendation for a powder that will keep a 220gr SMK supersonic out to a mile out of a .300 WinMag Remington 700 Sendero II. I'd prefer to just buy a big jug or two of it so I get the same lot for a few thousand rounds. I suspect by the time I'm done with 4k rounds the barrel will be burnt out anyway so I'll get a new barrel then. So, what's your suggestion?