I want to use reloader 17 for a 300 wsm with 155 berger match bullets. I emailed Berger and they haven't worked up the load data for that combination. Have any of you experimented with that load? I plan on Fed 215 primers.

I'm assuming you've been to alliants website where they post a max for a 150 grainer at 69.3?? I can tell you from gathering data from reloaders of the 300 wsm, playing with re17 in my 06, and running some quick load models that will probably be the max you will work up to. It is not a wimpy load and I think you will get close to their speed forecast of about 3300 fps. I have some re 17 loaded in my 300 win mag but have yet to get to the range to test it. If the berger bullet is like the nosler 155 comp bullet it will probably be a slightly lower pressure maker than say a 150 accubond or ballistic tip.