Hi, Uberti specifies a #11 cap for their 1849 Pocket replicas. When I first got my Uberti 1849 Pockets, I tried to use CCI #10 caps and found that I couldn't get them on the nipples far enough and the caps would bind and lock up the cylinder to the frame. While I have thousands of both CCI and Remington #10 caps, I only had a few hundred CCI #11 caps. The #11 CCI caps worked well on the 1849 Pocket. I have been searching the usual firearms equipment supply houses for weeks looking to buy more #11 caps with no success.
Today I was doing some internet searching and found this chart, see:
http://s122.photobucket.com/user/mykealsm/media/Guns/CapSizes.jpg.htmlThat chart shows that the Remington #10 cap diameter is larger than the #10 CCI caps. Just for grins, I tried putting the #10 Remington caps on one of my 1849 Pockets. I was amazed, they fit perfectly!
Bottom line is that the Uberti 1849 Pocket revolvers will work with the #10 Remington cap.
Regards,
Richard