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mtrvl · February 10, 2013, 06:12 PM

I was recently given some old Dupont/IMR 4320 powder that appears to be in excellent codition. Does any one have loading data for using this powder to load .444 Marlin? I have a Winchester Big Bore Timber Rifle ,so it has a very strong action.

February 10, 2013, 06:12 PM	#1
mtrvl Member Join Date: February 10, 2013 Posts: 22	.444 Marlin and Dupont 4320 Powder I was recently given some old Dupont/IMR 4320 powder that appears to be in excellent codition. Does any one have loading data for using this powder to load .444 Marlin? I have a Winchester Big Bore Timber Rifle ,so it has a very strong action.