I have tried both #10 and #11 Remington caps for my pietta .36 cal. 1851 Navy revolver and neither fit very well. Both sizes seem to be too small. I have to let the hammer fall two times on the caps before they will go off and fire the pistol. What about CCI? Are the CCI any bigger or do they work better? A friend of mine is having the same problem with his Army San Marco Walker .44 cal. Thanks for any suggestions.