My new 300 wsm is finished and a friend who shoots 1000k is working up some loads for me. So for it shoots several bullets in 1/2 inch with more than one powder. I will post the rifle specs and finished loads in a few days. Basically it has a Montana Rifleman short magnum stainless action with a fluted 1/12 Kreiger barrel. I was wondering if anyone has tried H414 or H1000 with this caliber and if so what where the results. Also , would like to know if these powders are sensitive to temperature differences.
I got my 300wsm less than a month ago and it has a Broughton 5r 1/12 twist barrel. I tried two powders and checked velocity. Wasn't happy with the velocity of N-165 with a 165 BT but got 3158fps wth 71gr/R-19. Before I rebarreled I tried just about all powders for the 300wsm. I got a 2 1/2" group at 300 yds with R-19. Good enought for elk and deer. I may try some 150 gr Scirocco and 760. I think you got a great rifle and lots of luck. May want to get on shortmag.com alot of good info on the wsm and others.