Sheldon J
Member
OK I've been reloading for a great many years, but mostly handgun. Then came the .416 the .300 and the .30/40, and I started cooking my own. All was fine in this world until I ran into some reasonably priced IMR4350 (8#) at a gun show. Yes I brought it home.
Now here I am looking at the books and see that there is a H4350 and a Accurate 4350 as well. Being as the different manuals are somewhat biased as to type of powder listed I grabbed for some of the other reloading manuals for some sit and study time.
After all this Reading about the only difference I can see in load data is the case volume, and the max load with the CUP being higher. The starting load is identical for a given bullet (which is where I like to hang out) to within .1-.3 of a grain.
So from some of you that have BTDT can I safely extrapolate the base start load data for say the H or the Accurate to the IMR when no IMR data is given?
Now here I am looking at the books and see that there is a H4350 and a Accurate 4350 as well. Being as the different manuals are somewhat biased as to type of powder listed I grabbed for some of the other reloading manuals for some sit and study time.
After all this Reading about the only difference I can see in load data is the case volume, and the max load with the CUP being higher. The starting load is identical for a given bullet (which is where I like to hang out) to within .1-.3 of a grain.
So from some of you that have BTDT can I safely extrapolate the base start load data for say the H or the Accurate to the IMR when no IMR data is given?