Anyone see #7 yet? I'm seeing ads for it, but haven't come across one in my travels, so far. - dan
prosper said:IMR=Hodgdon. Same company, but the powders do have slightly different burn rates. I'd expect IMR 4227, 4198, 4895, 44350 and 4831 to go extinct sometime soon, and 3031, 4064, 4320 and 7828 to get rolled into the Hodgdon 'extreme' line.
An 'extreme' 4320 would be of great interest to me, as it would fit the gap between Varget and 4350 in the burn rate chart, be temperature stable and yet still produce the lowest flame temperature of the entire lineup for long barrel life (unlike 4350 which is a notorious barrel burner)