your not going to be able to use a x39 case for a 45 wild cat the od is to small. even a 308 win case would need to be reamed if possable at all. trust me i looked at a .44 on a x39 case it wont happen.what if one used a x39 case and opend it up to take a .45? the case would not need a taper like on the .357 max. the base (x39) is close to a .45ACP, case cap for x39 is 33.45Gr, .45 ACP 27.67Gr. yes a .45 long colt would get the same type of load/ performace, but no semi auto and still could use x39 mags. might make a good brush gun. muttman
for the record I was not the orignal guy to propose the 444??? I proposed a 444 marlin rimless made from 30-06 brass cut down then that idea was taken to make it fit into a AK length mag. I have made up the rounds and they can be shot I just need to finidsh the barrel and chamber it some how. here is the x39 a pair of the worlds first 444??? and a 444 BGR (BIG GUN RIMLESS)
Gunter original sugested cutting my 444 rimless down an I worked with him to come up with a way to form it and make it using 444 marlin dies.
http://www.gunco.net/forums/f244/44-37230/1biggun's ".44???" would be a .308-length cartridge
WRONG!! THE 444??? THAT GUNTER AND I WORKED ON WAS ALWAYS INTENDED TO FIT IN A AK OR AR MAG. AND WOULD LIKELY USE A 5.56 OR 5.54 MAG. I WAS PLANING ON USING THE NARROW 5.56 ROMMY MAGS. SEE THE PICTURES.
MY 444 RIMLESS WOULD BE 308 LENGTH AND IT CAN BE FORMED WITH STANDARD 444 MARLIN DIES AN CUT DOWN 30006 BRASS OR BLOWN OUT AND CUT DOWN 308 LENGTH BRASS.