I see a bunch of great stuff from talented reloaders and shooters out there so I figured this is probably the best place for this question. What is the best and most accurate CLEAN burning powder combination for the 20 Vartarg?? Any help would be greatly appreciated.. Now all I need to do is hope that Remington keeps their word and delivers the 221 brass at the end of Feb and then again the end of Mar. ,Straight from the Rem ammo factory)