Finally put my heavy 308 load over the chronograph.
My average velocity out of a 20 in. barrel was 2,464 FPS and a deviation of only 22 fps. I have no doubt this load will give 2,500 fps or more from a 22 in. barrel.
The load consists of Winchester Brass, 47 grains of Alliant MR-2000 powder, CCI standard rifle primers, and the Nosler 200 grain partition. The bullet was seated to standard cartridge overall length specs for the 308 winchester. The brass showed no signs of excessive pressure, and no extraction issues.
There was still a touch of space left in the case for more powder. The MR-2000 is very dense and gives great results. You could probably fit another grain or two of powder in the case, but not necessary with this kind of performance. The 1:12" twist of my Savage Model 99 stabilized the bullet. Dang good velocity from a short barrel, and I highly recommend this recipe to other 308 Win. to other shooters.