I have some experience with the Superformance powder available to us and found out the hard way (i.e.-STUPID!) that it is not the same powder they use in their Superformance line of ammunition. I have been reloading for many years now and the more I read this forum, the less I really know. I am, however, learning a lot from you who know so much more than I could even imagine. Thank you all! Now, on to my stupid experiment. Had been trying to find a good load for my 300WM but only have a Magnetospeed chrono and had read somewhere that they don't work well for ladder tests so have never really done one. Had a decent load worked up with RL26 and the 178gr. ELD-x but decided to compare it against the factory Superformance 180gr. SST. The factory stuff shot way better than my load soooo.....This is where "Dumb and Dumber" came together. I already had the identical components so I took a factory load apart, copied it and took it out back to my test pit. The only thing I did right was to secure the rifle in a cradle, tie a 20 foot long cord to the trigger and back off 19 feet before letting her rip. And rip it did! Ended up with a chrono reading of 3400+FPS, total case-head separation,a bad carbon ring in my chamber, and the feeling of being a total idiot! SO, my experience is that they are not the same powder,and, to quote MR. Bill Dance, "DON'T DO THAT"! 1 lucky MTGEEZER