In-Line Hunter;
I have the option to go with any of the three primers and chose to stick with the Musket and have not regretted it. I do use a Musket capper as well. Sure makes a handling difference, during late season. .....
Side-Lock Hunter;
Did convert for a time even though I had no real issues with the 11's.
Have you made sure that the flange will clear the snail? Also, I can weather seal the 11's where I find it harder to do with the Muskets. ....
Be Safe !!!