I really enjoy shooting my hammer guns, but I've noticed that it's not uncommon to see a hammer gun that has worn tumblers to the point where the hammer won't hold back. Are hammer guns intrinsically more prone to that because the sear notch in the tumbler is so small, or is that just more an issue with low end guns? I don't recall seeing many high quality hammer guns with this issue.

I'm asking mostly out of curiosity, but also because I'd like to use my hammer guns for target shooting more often, but I'm often hesitant due to concerns about wearing them out, and I'm not sure if that's something to concern myself with or not.