HP-38 is a very fast powder, and will not deliver anywhere near the performance of the 10mm cartridge.
Hodgdon does list some data for it. They appear pretty anemic, pushing a 200 gr bullet only 1,000 fps. AA#9, Blue Dot and 800X are preferable burn rates for this catridge.
If it is what you have, it should be fine for target loads. For full power stuff, look to a slower powder.
Hodgdon does list some data for it. They appear pretty anemic, pushing a 200 gr bullet only 1,000 fps. AA#9, Blue Dot and 800X are preferable burn rates for this catridge.
If it is what you have, it should be fine for target loads. For full power stuff, look to a slower powder.