I just got a antique rolling block carbine. The barrel is a 50 cal. So I thought it must be a .50-70. A friend gave a .50-70 brass. Its way too long (.3"). But the .50-70 brass mics out to the correct dimensions. I saw a MidwayUSA video on YouTube for a .50-45-400. I am looking for cartridge dimensions. Any one have them. I did find one mention that the brass length should be between 1.25 and 1.30.
Any help would be appreciated
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