jds holler
Gold $$ Contributor
Just wondering if anybody has been using H380 for their 243. I've got a bunch of this old powder in my rack, and never have tried it for this cartridge -- or any cartridge.
I put a batch of mid-range loads together with Winchester bulk bullets last night for a simple test load, but haven't tried them yet. I've got a good quantity of Hornady 87 gr. flat based spitzers that I'd like to power with this stuff if I get any good results from a ladder test.
This is very old powder, so I've been looking at my old books. Except for one (older Hodgdon) they are all pretty close on the weights. And of course I've got the data listed on this can.
One question I've got concerns magnum primers with this powder. Speer books call for them, but none of the others I've got. Is this powder a hard igniter?? I'm getting about 80% case fill. jd

I put a batch of mid-range loads together with Winchester bulk bullets last night for a simple test load, but haven't tried them yet. I've got a good quantity of Hornady 87 gr. flat based spitzers that I'd like to power with this stuff if I get any good results from a ladder test.
This is very old powder, so I've been looking at my old books. Except for one (older Hodgdon) they are all pretty close on the weights. And of course I've got the data listed on this can.
One question I've got concerns magnum primers with this powder. Speer books call for them, but none of the others I've got. Is this powder a hard igniter?? I'm getting about 80% case fill. jd
