Thanks, BlackJack. Also, when I wrote "more than one in the chamber, and 2 in the magazine", I meant more than the total of 3; not more than one in the chamber only. Tucker, you must be a grammar wizard. Thanks for pointing that out.
I am going to a target shoot where they allow 4 shooters at once and throw 100 clays continuously. No limitations on plugs, tubes, etc. Is it possible to get more than one in the chamber, and 2 in the magazine (2.75" shells) on the new M2 that I bought?