Well, today I started working up loads for the .22TCM. There are no SAAMI sanctioned loads so I'm starting with Western powder's load guide. I can tell anyone who's thinking about loading this round a couple things: Lee has a better sizing die than Hornaday but Hornaday has a MUCH better seating die as well as a mouth flaring die that is just about a must if you're seating flat based bullets, You also need to chamfer the mouth on these. The design of the case makes it very easy to distort the shoulder which results in an unusable round. Trying to break down mistakes in these is next to impossible from my experience! The press bullet puller can't grab the bullet and an impact puller will break before the bullet comes free most of the time. (if anyone has experience with these and knows of a way to break down mistakes, I'm all ears!). I ain't perfect (close) , so yes I make mistakes. If you try to seat a Hornaday V-max bullet you're probably going to have to cut the tip off to load a safe round that will work in a 1911 magazine. I've found that COL should be around 1.27" if you want to eliminate feed problems and right now I'm using TCM powder with Armscor bullets. I have a bunch of 43gr. Speer hollow points that I would love to load but to get to COL I'd have to seat them pretty deep so I'll have to work on a reduced load since this is a high pressure round with not a lot of room for error. The only good thing (and I may be wrong) is that the RIA pistol is a steel gun opposed to a polymer and I feel safer with reloading that than a $1300 FN 5.7.