It's a .45"Our esteemed colleague, Senor Britsmoothy, has achieved astounding success with a 50 caliber smooth rifle on small game and birds with shot loads and fg. We of course can't wait to see the effects of the quantum leap of increasing the bore size to 56 caliber, nothing around Brit would be safe! With a patched round ball and up to 100 grains of 2fg, up to 75 yards of deer accuracy should be easy. Perhaps a finer powder will help with accuracy? I shoot 3fg in almost everything, but Brit swears by 4f, which I have been told will make scrap out of any rifle, causing dismay to the shooter, making children scream and dogs bark. Please contact Britsmoothy here on the Forum for further instructions with the use of 4fg. We wish you the best.
Yes, the square load or less powder, more shot will more often result in a better pattern. In a 56 smoothbore, 80 grains of 2f is about a maximum load and 65 grains might be more effective with a 70 grain volume of shot.I find it interesting that the T/C booklet shows 80 grains of 2f and a “60 grain” equivalent volume of shot for their load. Seems most of the wisdom here on the board recommends a “square” load or even slightly more shot than powder.