I'm new to black powder and just purchased an 1851 navy revolver. I bought it used from a local shop. Took it out for the first time yesterday and fired 20 rounds and had lots of problems. Here goes, I tried cci #11 caps and they fell right off so I tried cci#10 caps and they still fit loose but better than the 11s. When the gun fired it shredded the caps and pieces of the caps kept falling into the action. Also it almost seemed as if the hammer was pulling the caps off of the nipples at times. Only one or two chambers would fire on the first strike, some of the caps had to be struck 3 or 4 times before they would go off. Also It broke, I believe it is the hand & spring that broke because now the cylinder rotates with the hammer at full cock and it wont lock up. I'm quite frustrated. I talked to the shop I got it from and they will fix the hand & spring if thats whats wrong with it. What can I do to make this thing reliable?