I am going to purchase some hard cast lead bullets, 158gr SWC, and load up some target/plinking rounds for my GP100 357 mag.
Being new to this, I have been doing a lot of reading, and I now know that you have to match the "best" or "most-appropriate" Brinell harness to the muzzle velocity you plan on shooting to avoid/minimize "leading".
I know I will need to do my testing to come up with some good "fits" that do not lead-up too badly, but am looking for some recommendations from experienced folks.
So, what Brinell factor do you recommend I purchase for the following muzzle velocity ranges:
800 to 1,000 fps
1,000 to 1,200 fps
Also, who is your favorite hard cast lead bullet supplier? Looks like they all have approx the same price, but no doubt some are higher-quality and better customer service?
Thanks for your suggestions on this!
Crab
There are a lot of words in response to your post, but to sum it up, basically any commercially cast bullet you buy should be fine; they'll all be slightly harder than you need.
The crucial thing is measure your throats with a pin gauge (or fishing lure) as matching the bullets to throat size is going to have more of an impact on leading than hardness will (not to mention the positive effects on accuracy).
It's also possible that the powder that works well for the lower powered loads might start to lead in the hotter loads. I occasionally have problems with unique doing this.
