Thread: 300 blackout

Originally Posted by shooternz

The hard part is finding Trail Boss,
I have just had a .300 BLK built mainly as a cast bullet test rifle and a small game rifle I don't own an accurate .22RF
and I don't want to waste Trail Boss, 3.5 to 6.0 grains of any fast Shotgun or pistol powder will do for sub loads
the expense is in the primer.

Yes indeed, been using some old ICI Nobel Shotgun No78 powder for exactly that. 12-13 gns max in my old 303 gives 1600-1800 fps with Walker 215gn (approx) gas checked boolits. Accuracy is not outstanding from the old girl but will hit and drop minute-of-goat out to 80m no problem.
10-12 gns gives around 1400fps in my Marlin 30-30 with Walker 151gn GC HPs with better accuracy. They hit pretty hard too. Neither is suppressed- don't have much interest personally in subs other than for rabbits with 22lr. More interested in emulating 19th- early twentieth century woods style hunting for table meat out to 120m with least wastage. Think 32-40, 44-40 for e g. Whitetail size ( Fallow, Goats, here) and 30-30 for the bit bigger ( Sika, Reds, Pigs)