Goodgrouper did my load work up on my 270 amp if you want to get ahold of him 7mmrhb may be able to help you if he doesn't reply to this thread or I might still have his # I could pm you if I can find it
Read GoodGrouper's thread. That thread had the all the names of everyone that did work on his rifle as well as a drawing of the chamber and who he had grind it for him. If you read through you'll find what you need. He even goes through his bullet testing.