As promised about fourteen months ago to post the finished bullet results, I finally received my Corbin H-Style 0.458 caliber die set. I'll be using them in my Uberti 45-70 but believe they are the same bullet the Socom rifle uses. After checking the Corbin website with the new owners, the standard H-Style punches went up 40%, $50 to now $70. Die sets have also gone up in price. Luckily this will probably be the last set I'll need.
I wanted to make multiple sample lots from 300/gr bullets to 400/gr bullets. Copper jackets and 40/S&W cases would be used to see how things turn out. Using copper jackets, the bullets probably look as good as a factory bullet. I had several thousand from the RCE days so the cost per jacket was probably around $0.07/each. The bullets using 40/S&W cases for jackets are very comparable at $0.04/each and will probably shoot about the same. I'll be testing them out in the local indoor range this year and at the 200/yard range next spring.
Here are all the results with a total of 465 made. The labels should explain the details.
These probably only took about five hours to make. I previously swaged all the various core weights after the die order was placed. Sorted the 40/S&W cases for the same head stamp. Even doing that the cases could vary several grains. The bullets using copper jackets are all probably within a half grain. I don't believe a several grain variation will make a difference with a 350/gr or 400/gr bullet. If I were making rifle bullets like a .308 I would make sure the weight would not deviate more than one or two tenths of a grain.
Thank you for all the past comments and replies.