Any live pilot WSM reamer (except the 7WSM) can be bushed up and used. I bushed up and used my 6.5 WSM reamer, then neck and throat reamed. I used a Savage action and a Green Mountain barrel. It is still at 26", I just don't know what to cut it to, I'm liking 22" for handyness and reducing the weight. I had a guy in Iowa modify a set of 325 WSM dies for bushings and made me 35 cal bushings for the sizer die. It was cheaper than having custom dies made. I have only tried RL17, but in this day and age use any powder you can find in that range. The thump is a shove rather than a smack - about the same as my 358 Norma and much less that a 300 Win/Wby
