Well, here's the progress so far:
No dealers within 1 hour drive carry anything but CCI caps, so I am stuck with them until the next gunshow.
I have two sets of nipples, so I cautiously shaved some material off of one set, until the caps fit better by hand. They still don't seat with the pistol capper.
It appears that Cabela's pistol capper (the little brass on that is kind of shaped like a sperm) is designed so that no matter how hard you try, it "bottoms out" before it the primers are seated deep enough.
If the nipples were a few millimeters longer, it might work.
I plan on trying some #11 caps Saturday.
A wooden "cap seater" stick is an option, but I would like to be able to shoot this thing with the least hassle possible.
If the #11s don't work, I will probably see if Cabela's will take it back.
I may be niave, and this is my first experience with black powder, but I have been shooting long guns and handguns for 30 years.
If a gun is sold as working with #10 caps, then
any tin of #10 caps that I purchase should work.
Oh, for a perfect world.
The Cabela's service dept. said they were not aware of any problems with CCI caps.
Maybe more people will call.
Do that many of you actually have a choice of caps to choose from?
I've called a dozen dealers, and checked Walmart.
It's CCI or if you don't want those, you can get CCI.