Hello everyone, I will do an intro later but stumbled on this thread while looking for decent load data for my 10mm. I ma most likely the outlier here as I generally shoot 10mm from a 14" barreled Contender that seems to like 180-200 grain bullets at book max where they typically suggest strongly not to use these loads in semi autos. I cannot speak as to why my specific Contender prefers these loads in the name of accuracy, but I'm betting that having all that extra barrel to use every bit of powder and build the velocity has a great deal to do with it. One additional note, you are now making me want to pick up a decent 10mm semi auto for perhaps primary carry duty, and move my 45 to back up.  Nice thread, even if I'm a bit late to the party, glad I found the forum.

Casey