I am thinking about getting different nipples for my C&B pistols (1860 & 1858 Pietta) I was wondering if the Tresco nipples are any better than the standard ones. I looked at the website http://www.trackofthewolf.com but I was at a loss as tho the size/type/thread pitch for these Pietta guns. Does anyone know which ones fit and if they is really any difference? Now I am using #11 caps (CCI & Rem) but I have to pinch them to keep them from falling off especially when the nipples are clean or new. It would be nice to have a FAQ for these things since I have seen several post regarding these topics.