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
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