A freind of mine used to be big in IHMSA (He won 3 National championships and wrote articles for them). Last night he brought me a Contender barrel in .357 Rebel. It is a 7mm BR necked up to to .357. He had started testing it in the early 90's and retired soon after, so he never completed the tests. The notes with the dies show to load it similar to a .357 Herret. This should be a kick to work up loads for. Sure could use a few more freinds like him.