I like to shoot the RCBS 175 sil. over WC820, lit by a mag pistol primer. If you don't have 820 you could use AA#9, it's very similar. Don't remember the load but it's running about 1300 fps out of my 10" barrel. Be careful working up loads, you can run into pressure problems easily. Not dangerous, but the brass gets mighty sticky. I load it so I get easy extraction in the summer. Haven't lost any rams yet with this setup.