I have/had several .22 smiths. I have found the bores to be tight on them too compared to other rugers and colts I have/had. The smiths need cleaning more than the others. I never made a project of it but maybe others here might know if putting steel wool on a cleaning tip might help and working over the chambers good might help or hurt. Some of the trouble might be because the smiths are recessed rims where others aren't and they have to be kept cleaner than the other brands. Along with that it wouldn't hurt to try various brands of ammo and see if there is a difference and stick with what works.