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black mamba · February 17, 2012, 07:02 PM

Trail Boss, IMR-4759 and Accurate 5744 are all designed for exactly your application: light cast bullet rifle loads. The first, Trail Boss, is so bulky that it nearly fills the case, but only weighs a third of a normal rifle powder. The other two are slower, but are designed to be "position insensitive," meaning it doesn't matter if they lay in the bottom of the case while on it's side, in the chamber.

I use 30 grains of 5744 to fireform Whelen AI cases from standard 35 Whelens, under a 250 gr. gaschecked lead round nose bullet. Velocity is around 1900 fps, but the pressure is between 45 and 50 thousand cup. They have very little recoil and blast, yet would be an excellent short range deer or black bear load, besides fireforming my brass.

February 17, 2012, 07:02 PM	#22
black mamba Senior Member Join Date: September 13, 2011 Location: SW Florida Posts: 890	Trail Boss, IMR-4759 and Accurate 5744 are all designed for exactly your application: light cast bullet rifle loads. The first, Trail Boss, is so bulky that it nearly fills the case, but only weighs a third of a normal rifle powder. The other two are slower, but are designed to be "position insensitive," meaning it doesn't matter if they lay in the bottom of the case while on it's side, in the chamber. I use 30 grains of 5744 to fireform Whelen AI cases from standard 35 Whelens, under a 250 gr. gaschecked lead round nose bullet. Velocity is around 1900 fps, but the pressure is between 45 and 50 thousand cup. They have very little recoil and blast, yet would be an excellent short range deer or black bear load, besides fireforming my brass.