if anyone has gotten the same problem? I will contact RIA if I can' get any answers to this problem here. Thanks again for your reply, Earl.
Possibility of harder primer coupled with the 17 lb main spring (which is also lighter than typical used in their others and could also possibly be worn) could put it borderline and be one place to look. I had to start avoiding a particular brand of ammo with my AR once going to a lighter trigger group. My XT22/45 actually came with two different main springs....one to help the 22 cycle reliably and another to use in case there was a problem igniting harder primers when swapping out to 45.
Might be able to swap over one of your other MSH's if you've got a stiffer one to try out if it'll cycle with the TCM
problem. The 9mm Fire fine ,the tcm rounds are about 4% fail with factory loads and reloads. I have
removed and cleaned the firing pin. My next thought is to replace the main spring. If the factory spring is 17 lbs has any one got an ideal what weight spring to upgrade to. Thanks