Howdy,

The Pietta uses a 6X.75 nipple.

This is the best place that I have found to cross reference nipples and find out what your gun uses:

http://thunder-ridge-muzzleloading.com/nip_x_ref.htm

Good Luck,

Lee

Thanks Folks,

I am going searching.

Do they go on at an angle or straight in line with the nipple? Where I live, there no "shops" to haunt. Any blackpowder supplies are just a little corner or display in the gun shop. Not many folks around here shoot bp and I am the only one I know of that shoots a bp revolver. I do all my s...

Howdy Karl, Thanks for the reply. I have a drawer full of cappers of different styles and shapes and none of those will work on any of the 1858s that I shoot (Pietta, ASM, and Eruoarms). Do you know where I can get either of the two that you mentioned? My old fingers don't work like they did at one ...

Howdy Niner, I just found you all and was reading the posts on blackpowder guns. I shoot a 1858 Remington a lot and have never found a capper that will work on one. In your picture, it looks like you are using one that puts the cap straight on instead of at a 90 deg angle. What kind of a capper it t...