Not sure, but do know it'll spin the hell out of 260/265 gr hard cast Beartooth and Cast Performance bullets to the tune of 1855 fps with RL-7, deer and pigs cant think of bucking those loads, I'd shoulder shoot the biggest bull elk that ever lived inside 200 yards with those loads and my M-94 equipped with the Lyman receiver peep.
Good luck with your 38-55 WCF pursuits, it's a fine, fun cartridge.