It took a long time to finally get my hands on a new Rock Island in 22 tcm and then I shot it for a few months with the 9mm barrel in it because I didn't have any 22 tcm ammo. By the way, the 9mm set up is amazingly accurate and loves cast boolits. For Christmas my awesome wife got me some dies. Unfortunately they were out of the Lee dies, so I got hornady dies. I'm now a couple hundred rounds into loading for this fun little caliber and getting some better accuracy. So far the factory ammo does ok, but not anything to brag about. The cast loads are working pretty good so far. I am running the lyman 225438 hornet boolit and, now that I've worked out overall length and crimping issues that caused the rounds not to let the action fully close, I think I am getting somewhere. I think my next step will be to carefully try some other powders like 2400 and HS 6 just to see what they might do for accuracy and velocity. I am currently running 9.2 grains of W 296 and it seems to do well and proves more accurate than the armscor stuff. Here are some pixcs of the round: