Kid, faster burning it in a line. I don't have a chrono, so can't testify to that. Shooting Swiss, and zeroing my rifle, at one hundred yards, then switching to Sassafras homemade, the group raised about four inches. That was with the same measured weight of powder. As others have experienced, my powder is slightly lighter, by volume, than the Swiss. I don't know what would raise the group, other than bullets being faster, but I'm not an expert and I really wish I could play with a chronograph, for an afternoon, to do some accurate comparisons. What I really like, is how clean it burns and the type of residue it leaves. I usually swab after every shot, when trying to test and I've been breaking in a new rifle, and trying vastly different loads, bullets, patches and balls. But, to just see, I did load a tight patched ball five times, before it became too difficult, to load the next. Which was about on par, with Swiss. BTW, I don't use the heartwood, of Sassafras, either. I use from about 1/2 inch to about 1 inch limb wood, debarked and green, or debarked and dried. This is where I got the idea, to try Sassafras.
In this test, it was in the top five of about 80 woods tested, on burn times.
http://www.wichitabuggywhip.com/fire...oal_tests.html