I have had my ruger new vaquero lock up with the hammer cocked back, im not really sure why this happened a couple times but the trigger will not release it and it takes a little trigger and hammer working to release it. It makes me a little nervous because i've had live rounds in and cant work the cylinder without putting the hammer down.
On a side note, if anyone knows how to smooth this out, please let me know. Im assuming it may be internal and havent really cleaned the trigger or hammer internals. Please help.