You ask,
Flatten a lead ball just enough that you can just drive it in the barrel with your short starter pull the breach plug and push it back out after you are sure it was in far enough to engrave the rifling, measure it, either post the size of your barrel so one of us can help you or go to MM forum and look at the sticky that has the different sabot in combination with different bullets and pick out what you were using that grouped and find a combination that gives you that size. You will probably have to order some sabots but its the way to get a start on learning about the different combinations and how to make them work for you instead of against you. Lee
PS I see sabotloader has posted what I was talking about. Lee