by Gdawgs on Fri Apr 12, 2013 7:41 pm
Might be able to chamber 410. I've never tried. They make two different frame sizes in the BFR, Short cylinder and long cylinder. I believe the first caliber they made the long cylinder model in was 45/70, so they designed the cylinder length around that. Then they added other calibers later. So the other calibers offered in the long cylinder frame(30/30, 450 Marlin, 460, 500, etc) wouldn't need a cylinder that long, however it would be very costly for them to customize a new frame size and cylinder length for each caliber. It's much cheaper to use the same frame and cylinder length for all the calibers, so that's what they do.
The cylinder length on the long cylinders is right at 3".