Steve I have only used factory 225 SST's so far. I do have dies, but not enough empty brassto make it worth setting up a loading session. Knowing how I am I would say check back in about 2014 on the reloading.
I have the wood stock 20 inch barreled model, I am being to lazy to look into the safe right now. Or too sore, it was a long day.
I sort of feel like my decades of experience spoke to me when this gun was chosen. I guess I could machine a nice bloop tube to get 24" - LMAO (I do install a bloop on my long barrel AR for walk around varmiting, saves the ears some.)