I have a Herters .401 Powermag. The problem is that being a discontinued wildcat, there is very little load data to be found.
My question is: Is there a formula, or a way to to convert loads from one powder to another? For example, if the recommended load of 2400 is 19.5gr, is there a way to figure out how much of, say, Unique I would use?
I have tried to find similar loads for other guns, that list the different powders, but I have not found much success in cross referencing like that.
Any suggestions?
Thanks in advance.
My question is: Is there a formula, or a way to to convert loads from one powder to another? For example, if the recommended load of 2400 is 19.5gr, is there a way to figure out how much of, say, Unique I would use?
I have tried to find similar loads for other guns, that list the different powders, but I have not found much success in cross referencing like that.
Any suggestions?
Thanks in advance.