Quick hbwc question

[Tom]

I have lb of ba10 and can't find recipes for it and hbwc's. I'm thinking that the volume of lead in the case is the same whether a dewc or hbwc is used, so the powder charge should be the same, correct?

 

[Cherokee]

No its not the same powder space for a DEWC and a HBWC seated to the same OAL...hollow base allows more powder space.

 

[fiver]

yep.
same depth but the hollow leaves more air volume in the case.
probably not enough to get all worked up about at 700 fps, but I'd be [meh-shrug] looking for accuracy with either one of those anyway and not sheer speed.
0 .1-0.2grs. either way probably doesn't mean much of anything until your blowing the skirts off the hollow base bullets.
for starting data I'd be okay using one for the other.