I've been using 115gr tsx's in it as I was shooting everything with it (taken sheep, caribou, moose, wolf and bear). I'm going to play with 100gr ttsx's in it this summer and make it a dedicated wolf gun. After talking a bit with Roger on here, he kinda got me interested in burning the barrel out
He's a good resource for this cal.
The 115's were a lot slower than 3500 (can't remember exactly where they grouped nicely at) but I'm hoping the 100's find their groove around that number
RL-22 is a good powder for this one.
tm