Thread: Why you keep old Powder Data Manuals

Greetings Again,
It is going to be hot outside again today so I was pottering about on the computer. I had noted that the ADI data included no loads for AR2208 for the .30-40 Krag, a notable omission as the burn rate would just about ideal. Next I checked the Hodgdons data and to my surprise here is some data and with pressures as well. The pressures are in CUP as there likely is not a max in PSI established for the .30-40. The start load with the 150 grain is 40 grains of Varget for 2,567 fps at 35,100 CUP and max 43.5 grains for 2.727 fps at 39,200 CUP. This lines up pretty well with the old data I have for IMR4604. It also makes the old data for IMR4895 look even more out of step. This data likely dates from the time when new manufacture IMR4895 was replacing the bulk military stuff which likely varied greatly from lot to lot. All this goes to prove that even an old dog can sniff out a truffle now and then.
Regards Grandpamac.