INVICTVS138 wrote: Mon May 17, 2021 8:40 am
brinell hardness number?
Yes - Lyman #2 alloy 5lb Ingot purchased from Midway. Takes the guesswork work out of the alloy.
It’s almost as expensive (when factoring shipping) as purchasing pre-made cast bullets - but they are severely back ordered right now & this lets me shoot in the interim. And it’s a fraction of the cost of “factory” .45 colt ammunition - if it was available.
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Just a note. When you shoot these bullets through that Henry--regardless of your load used--I'd better let you know about some experiments I did with bullet hardness and lead-fouling, using the .45 Colt cartridge.
By the way, your bullets do look good.
I also had cast some BHN 15-16 bullets. The bullet weight was 255 gr, LRNFP, from a Lee 6-cavity mould. The powder was 2400. I tried 20.5 and 21.0 grains of 2400. Got rather severe lead-fouling in both chamber and barrel, as well as buckshot-like patterns on the target. When I got the load to 21.5gr, the lead-fouling almost entirely went bye-bye, and the buckshot patterns tightened up into actual groups. So, I tried 22.0gr of 2400. The groups tightened up yet a bit more, and the lead-fouling was completely gone. I tried 22.5gr and got the same results as 22.0gr.
What that told me was as follows.
Apparently the 21.5gr of 2400 was the point at which there was enough pressure to begin properly obturating the bullet. The 22.0gr finished the job, hence the slightly tighter groups. So, unless your bullets are already a little oversized, that BHN 15-16 is going to need some pressure to provide a proper gas seal in your gun as well.
I then tried BHN 12, with the same loads. Zero lead-fouling. Good precision on target. So, BHN 12 is now my standard alloy for my ".45 Colt Magnum" load as well. It appears that softer is actually better until you start looking at full-house .454 Casull loads; then BHN 15-16 is more appropriate.
My bullet lube in all cases was, and remains, liquid Alox, tumble-lubed as is my general practice. Hey, it works...and it's quite convenient from an actual workload perspective. I use a medium coat, which has proved sufficient for not just the Super Redhawk 454, but also the leverguns in various chamberings.
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