I shoot both 36 and 44 Colt C&B, the remington #11's always gave me trouble with splaying, pieces catching in the mechanism etc. I went to CCI #10 and have not had the level of problems with them, they appear to be softer and may split on one side, but come off easily and seem to be real consistent. I do have to make sure they are seated all the way on the nipple, they take a little bit more seating pressure than the 11's.