NRA Tests Muzzleloader Propellants
09-19-2007 | 05:59 AM
#1
Thread Starter
Boone & Crockett
Joined: Mar 2007
Posts: 11,410
Likes: 1
From: Comance county, OK
NRA Tests Muzzleloader Propellants
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.
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.
09-19-2007 | 08:54 AM
#3
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Boone & Crockett
Joined: Mar 2007
Posts: 11,410
Likes: 1
From: Comance county, OK
RE: NRA Tests Muzzleloader Propellants
Triple Seven FFG gave:
100 grains: 1,961 fps.
150 grains:2,166 fps.
777 Pellets gave:
100 grains: 1,731 fps.
150 grains: 2,106 fps.
Two of the spiffy new TSM pellets gave 1,850 fps.
BTW: 777 and RS (both pellets and powder) gave thelowest standard deviation ofall propellants tested. 100 grains of 777 powder gave an SD of 10.An SD of 10is very hard to attain when reloading some centerfire calibers.
100 grains: 1,961 fps.
150 grains:2,166 fps.
777 Pellets gave:
100 grains: 1,731 fps.
150 grains: 2,106 fps.
Two of the spiffy new TSM pellets gave 1,850 fps.
BTW: 777 and RS (both pellets and powder) gave thelowest standard deviation ofall propellants tested. 100 grains of 777 powder gave an SD of 10.An SD of 10is very hard to attain when reloading some centerfire calibers.
