The proofs are clearly marked as 2 1/2", Nitro, etc.

I'll see if I have a picture on my box at home, and if not, will see to taking one and getting it up.

After I posted, I bodged up an expander to hold the crimp wide open on the hull I was playing with, in order to see if it would hang up on the beginning of the forcing cone taper, and it slid fully home without any pressure required, so one way or another, it seems that it will clear the 2 3/4" hull. By how much, I would like to determine.

One fellow I spoke to thought the answer to everythng was to drop a long forcing cone reamer into it. I have not been back to his place. I am not very interested in modifying the gun, when I can modify the shells to suit.

Cheers
Trev