4895 was the principal IMR extruded powder used in military ammo in the '40's and 50's. Never heard of IMR 4996. It is not on any government ammo loading table I have ever seen, nor does it appear on any burning rate chart.
"Bitte, trinks du nicht das Wasser. Dahin haben die Kuhen gesheissen."
Posts: 4386 | Location: New Woodstock, Madison County, Central NY | Registered: 04 January 2005