I don't have any experience with that particular model, but have a pretty fair amount of trigger time with J and K frame 22 revolvers over all. If one is experiencing what they believe are light primer strikes, examine the primers and see if the marks are as deep as the ones that did fire. It may not be the strength of the hammer strike as opposed to a batch or brand of ammo that has issues. My son and I were recently shooting my Model 34 with Aguila high velocity and experienced misfires on double action. That revolver has a pretty stiff trigger as opposed to my other wheel guns, but is 20-some years old. It might be the gun, but it might also be the ammo. We'll test the ammo with a Model 18 and 10/22 carbines to see if we have any issues. Most of the misfires went off the second time. That said, I think the 43c is a pretty neat little gun and would like to own one some day.