Originally Posted by
1066
Well, as Fred says, there are some C&B revolvers where you can't do without one, some where it's difficult to load due to large calibre and short barrels, then there's the mechanical strain on the frame, especially the brass frames. Even a soft lead ball that's a little on the large size takes some effort.
Yes, it certainly speeds up loading, especially if you have a spare cylinder or two. I always think it gives more "feel" to, a slightly undersize ball is very easy to feel and can be used as a fouling shot etc.
So, not always necessary but nice to have and use under some circumstances.