My 58 Hawken has a 35 inch barrel 1 1/16 across the flats with a 1-72 twist. It shoots a patched round ball extremely well, routinely shooting one hole at 50 yards. I have taken a pile of deer, a bunch of hogs, and a black bear with the rifle in the 35 years that I have hunted with it. I have never seen another caliber rifle of any kind that puts deer on the ground as quick as a 58 with a patched round ball. It is a HAMMER, I tell you.