.444 Marlin and Dupont 4320 Powder

mtrvl · February 10, 2013, 07:12 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.

MarcB · February 13, 2013, 11:13 AM

For a 240gr slug starting load is 54gr max is 56gr. Use this data at your own risk.

mtrvl · February 16, 2013, 01:55 PM

Thank you for your reply. Apparently not too many people have info on this old powder for this caliber.

February 10, 2013, 07:12 PM	#1
mtrvl Member Join Date: February 10, 2013 Posts: 21	.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.

February 13, 2013, 11:13 AM	#2
MarcB Member Join Date: January 7, 2013 Posts: 29	For a 240gr slug starting load is 54gr max is 56gr. Use this data at your own risk.

February 16, 2013, 01:55 PM	#3
mtrvl Member Join Date: February 10, 2013 Posts: 21	Thank you for your reply. Apparently not too many people have info on this old powder for this caliber.