Are they the same as the musket cones, in as much as a fella has to watch how big the flash hole is getting and turf them beyond a certain size? I have two #11 nipples here. The one thats on the gun has a cone the same size as the flats for wrench and the cap is snug. The other that came as spare and marked #11 has wrench flats bigger than cone and cap is loose. What gives on that? Naturally I'll want to replace the one on gun with another that holds cap snug, but if there both #11 nipples, wheres the distinction?