Gentlemen - I do cast my own (when I get a mould). I was wondering if anyone used the REALS in a .54. As for the PRBs Hawkeye, I have a GM .54 with a 1:70 twist for them. And I don't plan on using this one for deer. Possibly bear. But I would be willing to trade this barrel for a GM .58. But I have a promise out to someone else first. But if anyone has a .58 send me a pm and I will keep it on file in the back of my head.