I have done a little testing in a 270, 30-06, 338 all of which performed best with slow burning powders in any given barrel length...I did this many years ago because the general concenses was that fast burning powders got more velocity in short barrels because the supposedly burned all the powder..For what its worth most of the early gun scribes promoted this therory in most of the magazines as I recall...
I tried it and I didn't get the same results they did, I was stringhaulter and gilflurted for my opinnion!
..I don't know how some of this stuff gets started, its like some expert makes a wild claim and the whole world just excepts it because of who said it, but hey thats how we got our last president isn't it...:)
