Thread: Powder for 303 150's

by low pressure signs you mean????
303 has a few tricks to reloading....loose chambers and possibly headspace mean you want to allow brass to stretch and keep it as big as you can,eg just size neck to make brass last...that SHOULD ALSO HELP with pressure signs.... 748 should be great as its fine in 308 and realisticly the two arent much different....there is a trick with wee oring,like what folks use on denture braces to keep cases in place for first fireing.also try 180 grn projectiles as some 303s prefer the heavier/longer projectile, Robert has cast ones that work well too....might be better and definately cheaper option for you.