I finally got to shoot my new 358 yesterday, with a wide variety of loads. Everything from Trailboss and Lee 158RF to duplicate a hot 357 revolver up to full rifle loads. The standout was the BRP 35 paper patch bullet, 215 grains cast from air cooled wheelweights, and patched with drafting vellum. Loaded over 45 grains of WW748, it was going at 2500 fps and holding 2 inch groups at 100 yards. No gas check, no lube, smooth feeding and plenty of power. Gotta love that!
BTW, the barrel is an Adams and Bennett, that I got on a lark because it was so cheap. I turned it to a Kreiger #3 profile, and finished it at 22 inches. Makes a nice easy handling rifle, I think it is going to be one of my favorites before long.