Just the specs from AG, it's 3.560" long with a .577" case head, Ed's data runs to 30kpsi which is pressure tested, he used a 32" barrel he made for an SB2 shotgun frame, 22" velocities will be less than what he lists on AG, 500gr @2400fps. He provides data which I'll use the fastest powder listed, if it doesn't work, I'll work my own load up for the 22" barrel using QL predictions once I know what the case volume is. I'll probably sticky with the 385gr Remington CL bonded if I ever hunt with it, but I have a bunch of jacketed .500" bullets that a custom mfr sent me for testing that I've never shot, he's no longer in business.
Tim