Bill I wasn't invited to the party, but of course I did fail to mention the measurement factor. I just assumed that one would do so. But you are more than correct, you'ses right
ownn! David

David,

I received about 500 3 1/2" Federal 10 gauge hulls to reload. I cut them to 2 7/8" and the crimp was just not as good as the RST hulls I was reloading plus some of the hulls would crumple. I checked RST's hulls and they are almost 2 3/4" open. I have retrimmed all hulls to the RST length and get much better crimps and fewer crumpled hulls. The point is that the RST shells are just a fraction longer than your 2 5/8" chamber.

Harry

Harry, The chambers in my 1875 10ga end abruptly, no real forcing cone there just a rounded shelf. The chambers were made for the brass shells of the era. I have used federal 3 1/3' shells cut down and given a roll crimp which works well but can hardly be said to be time efficient. Still it better than watching TV! Thanks for the tip about RST shells I'll take a close look at them. David