Neither have I and some very good replies to the original post. Have never encountered this problem with my conicals and now know what to do, if ever I do!! .....Interesting. I hadn't heard of that.
To load the musket from a non-firing state to a firing state the following steps need to be taken. This assumes the use of the standard cartridge that was supplied to soldiers in the Napoleonic War.
1. Bite the cartridge with the bullet in your mouth.
2. Push the frizzen forward to reveal the pan and pour a small amount of gunpowder into the flash pan.
3. Snap the frizzen back to position covering the flash pan.
4. Hold the musket vertically so that the muzzle is near the face.
5. Pour the remaining powder down the barrel.
6. Spit the bullet down the barrel.
7. Push the catridge paper into the barrel (used as wadding)
8. Remove ramrod from hoops under the barrel and use to push wadding and bullet down the barrel.
9. Replace the ramrod in the hoops under the barrel. A very important step which is not always followed in the heat of battle!
10. Hold musket in firing position with the butt against the sholder.
11. Pull back the hammer.
12. Aim and pull the trigger.
This is true but obviously there are those that do not fit tight enough to hold. I have heard of this with round ball where no patch was used in it's evolution. All the concals I currently use, do hold and have to admit that some are just too tight to be tolerated for any length of time. I shoot about four different conicals and either through fit or surface contact area, they all hold. However since this post started, I have learned how to treat one that might move out of position. I think added compression might have a slight benefit.Why not get a minnie that is a good fit in the barrel?