Alliant says that it has a "similar burn speed to IMR-4350 but with more speed". So it is slower than most powders you normally use in the 308 but of course it's probably right at the burning speed you'd want for the heavier bullets.
In the Nosler Reloading Guide #6 they list 50.0grs of IMR-4350 as the max load with 180gr bullets. - and at 114% loading density......................DJ
Remember this is all supposed to be for fun.......................
