I have been having such good luck with magpro in a number of my rifles I tried it in my Tikka 300 win mag today. I could not believe the results in a 24" barrel. I loaded 86.5 grains with a 180 grain hornady sst and a cci 250 primer. Three shots were all touching at 100 yards at 3230 fps with a five fps spread. I went up to 87.5 grains with no pressure signs and over 3250 fps but the best accuracy was the 86.5 grain load. I have some 180 grain cutting edge bullets with the listed .6 bc coming in this week. I am very excited about getting a .6 bc at 3230 fps out of a 24" barrel 300 winchester accurately. Just thought I would throw this out there for you 300 win mag shooters.