Oh yes - most certainly, buy it, Sarg. Charge about 60gr. 3F - .640" ball, .018" patch - estimate 750fps with that 410gr., .64cal. ball.

My bro has a set of 12 bore percussion Damascus barrels, 12" long that will build a beautiful Howdah.

The one pictured above is Pre-Howdah in lineage, I believe.