Yeah, I have one in .54 and they are VERY tight...... My Lyman .54 flinty takes patched balls with a degree of tightness that I would typically expect of a front stuffer. Use the same balls and patches in the Pedersoli and I feel like getting out my ball peen hammer to aid in seating the balls...... The Kodiak is damned tight but I can’t complain about the accuracy nor can I complain about the regulation....