SpudFiles

well time will show the velocety..

i have a aluminuim cored 400g lead slug i will send on 30" of wood

When do you plan on doing this? Soon? I really wanna see it, even bad camera would be nice...If its too much of a nuisance don't bother

i took the boring job to cut a 1/2" steel plate with a angel grinder today so i am going to weld them tougether so i get a 1" plate to shoot on.

i am just done with the western union registration and when i get the money (soon) i will get the man to send me the union so i can go to 11x

That of course implies that we trust HGDT

Did Larda ever mention in his thread that, even in the 1km/s muzzle speed range, the HGDT outputs were accurate to better than a +/- 10% margin of error? That program is more accurate than most people give it credit to be, if you really know your input parameters. Considering that it has that kind of accuracy at over 100x, the 11x numbers, which aren't even trans-sonic in the propellant gas, should be pretty good.

I'd venture to guess that it's almost as accurate as GGDT.

DYI wrote:I'd venture to guess that it's almost as accurate as GGDT.

I don't doubt that given D_Hall's experience and knowledge, it should be good, but where I've been able to assess GGDT myself with my homemade chronies(it's usually within 5% or so), as I've never built a hybrid myself (and when I do, it'll not fit to all the normal parameters of hybrid) I've not had the chance to assess HGDT for myself.