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Arub · July 18, 2011, 08:17 AM

I could find no Alliant published data for the 240swc but found their tech support number: 1-800-276-9337.

If this helps, I'm running a 240gas checked swc at 922 ft/sec out of a 4.5" barrel using 7.5 grains of Green Dot (much faster burn than 2400). Same load runs at 1105ft/sec out of a 20" Marlin. Marlin's max load for the gas check bullet s 20.5 grains 2400 @ 1510 ft/sec out of a 6" barrel.

July 18, 2011, 08:17 AM	#2
Arub Senior Member Join Date: January 20, 2001 Location: UCLA (upper corner of lower Alabama) Posts: 533	I could find no Alliant published data for the 240swc but found their tech support number: 1-800-276-9337. If this helps, I'm running a 240gas checked swc at 922 ft/sec out of a 4.5" barrel using 7.5 grains of Green Dot (much faster burn than 2400). Same load runs at 1105ft/sec out of a 20" Marlin. Marlin's max load for the gas check bullet s 20.5 grains 2400 @ 1510 ft/sec out of a 6" barrel.