The Firing Line Forums - View Single Post - 45-70 Springfield performance question

Jim Watson · November 28, 2012, 10:14 PM

Fake powders like Pyrodex are figured on volume measure.
The load would be however much Pyrodex filled a measure that held 70 grains of FFg.

As Salvadore says, Trapdoor barrels run large. You need either a large diameter bullet, a hollowbase bullet (like 1873) or a soft bullet bumped up by real black powder.

November 28, 2012, 10:14 PM	#15
Jim Watson Senior Member Join Date: October 25, 2001 Location: Alabama Posts: 9,665	Fake powders like Pyrodex are figured on volume measure. The load would be however much Pyrodex filled a measure that held 70 grains of FFg. As Salvadore says, Trapdoor barrels run large. You need either a large diameter bullet, a hollowbase bullet (like 1873) or a soft bullet bumped up by real black powder.