45 Colt New Model Blackhawk Bisley and a heavy 45 Colt load?

[Mus408]

I have had great results shooting a 325 gr. Missouri Bullets cast load with 8 gr. Unique in my Henry and Rossi R 92 lever rifles. I like the load when using a suppressor
on my Henry X 45 for quiet 1000 FPS out the 17 inch barrel. I have shot a few thru my Bisley NM Blackhawk which is also a 45 ACP convert so should be good to 23,000 psi. Question is does my Colt 45 325 gr. load fit within that pressure level. I got that load data from Lyman 49th T/C Contender Encore data and it is below max of 8.5 Unique BUT no listing of pressures. Shoots nice with the Bisley grip.

 

[contender]

That load should be fine in a full sized Blackhawk. (Not the mid-framed Flattop ones.)

 

[Mus408]

That load should be fine in a full sized Blackhawk. (Not the mid-framed Flattop ones.)

Thanks!

 

[felix cortinas]

I shoot Buffalo Bore and Grizzly hot loads with 300 grain LFN no problem

 

[settup6]

Tim from Buffalo Bore ammo says it's all in the diameter of your cylinder. The large frame higher pressure cylinder measures 1.73 (+/- .005) and the smaller lower pressure measures 1.680 (+/- .005). From the Buffalo Bore website. My New Model Blackhawk measures 1.725 with my reloading caliper. I measured it in the gun store when I bought it.