Look at a copy of the NRA's Rifleman magazine for October, 07. Bryce M. Towlsey testedevery popular M/L propellant and some that are not popular. He used a Knight KRB rifle with a 27" barrel. The bullet in all tests was the Hornady 250 grain SST. Primer=Remington STS No. 209.

This was a very good and comprehensive test. i was surprised at the velocities obtained with Swiss B/P,1879 fps with a 100 grain load. This is also the first timei ever sawbarrel pressuredata for the variousM/L propellants. Pressures ran as high as 25,500 psi with 150 grains of Black Mag 3.