Warmish .45 Colt V-N350, 255 KB, and mag primers?

tactical lever

tactical lever

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Hi guys. Looking for a warmish load for Bisley Blackhawk. The max that I've found for regular Colt loads is about 11.2 gr. of N350 with I believe regular large pistol loads with a 255 gr. cast, or 250 J bullet at about 1050.

I figure that the magnum primers will give me a bit more velocity with a bit higher pressure and a complete burn. And I was going to go a bit heavier charge at about 13.2 grains. Seems like it should be well within Ruger large frame capability when I compare case volumes and similar loads for .44 mag and .45 Ruger loads. But will it be a good combo for the 255 gr. Keith bullet? Should it be a decent shooter?

Looking for about 1200 fps out of a 7.5" revolver.

Thanks guys.
 
yes, you can use N350 to work up to 1200 fps. No need for the magnum primer. Let the powder do the work.

350 is a bit fast for that project. You could get more velocity with less pressure with N-105 (about 14.5gr) or my favourite for the magnum revolvers, - 2400. About 20 gr.
 
Ganderite said:
yes, you can use N350 to work up to 1200 fps. No need for the magnum primer. Let the powder do the work.

350 is a bit fast for that project. You could get more velocity with less pressure with N-105 (about 14.5gr) or my favourite for the magnum revolvers, - 2400. About 20 gr.
Click to expand...

I have loaded heavier for it with H110 and 2400. Found pistol powder to be kind of in short supply when I was looking, but the N350 seemed to be a decent powder for a few things. I also wanted to keep an eye on economics and being frugal with powder choices.

I have been using CCI magnum primers for .44 Mag, .45 Colt and .357. Maybe I don't really need to at the lower .45 pressures, but it seemed to make sense when lighting a bigger charge. I figured even at a lower charge it equates to free horsepower. Maybe not ideal for best accuracy(?) but I figured that it would also give me a more complete burn and a bit higher velocity out of a given charge. I don't think I'd notice the difference out of a pistol.
 
So I tried them, and they are a bit hotter than I thought they'd be. Right around 1340. Not at all hard to extract, but I'd say very slightly more resistance to pushing out the cases than the extremely mild factory loads. Wouldn't mind knowing the pressure. Anyone happen to be able to figure that out with quick load?

Is there any other good ballistic pressure estimator/calculators out there? Does not seem to be possible to get it with my tablet or phone.
 
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