Hi,

I hope this is the correct place to post this question?

We have an 1880 Smith & Wesson revolving rifle in .320 Revolving Rifle (aka 320 Smith & Wesson rifle). I wonder if anybody has any information about the production of ammunition in this calibre?. I believe that only Winchester produced it, from around 1887 to maybe 1917. Any information would be gratefully received. Sincerely Richard Wilson