I used only the single 2 cavity mold under my Master Pot with the fan on. Never checked the dump time but should have been at least 4 dumps per minute. This bullet did good for those who purchased it. Most were fired in the 32 Single Six Ruger. Here a better picture of the bullet.
That actually looks like it would work well in the 30 Carbine as well. I have one of the Ruger BH's that I know it would. Like Beagle said with that lube groove all it would be required would be size to fit, or maybe throw on some powder coating first then size.
I have a nice Accurate 31-115H that I got from a fellow over on CB's. It shoots great and hits pretty hard for what it is, out of the BH. I touched base with TOm and he drew up a bit heavier version the 31-125F with a GC on it but I just haven't had time to have him build it yet.
Just too many irons in the fire for only one of me.