I ran a test on the 300WSM about three years ago. I reloaded one group of WW brass 10 times before I arbitrarily decided I'd gotten my value from them. There were a variety of loads in the 150gr. to 180gr. bullet weight to decide what worked best in the Kimber.
The reloads were full length sized every time, by the way. RL17 seems like a good prospect.

My home is the "sanctuary residence" for my firearms.