Here's another free 2 cents worth of opinion (isn't that an oxymoron?): I wouldn't risk damaging an expensive milsurp to save the price of a pound or two of powder. That's just me. I picked up a couple of hundred rounds of surplus 7.65 X 53 Argentine at a Flea Market for ten bucks and broke a bunch down. They had dates going all the way back to 1910 and some of the powder looked like it had spider webs holding the pellets together in clumps while in other cartridges the powder had turned into solidified chunks. Would it have been dangerous to shoot? I didn't care to find out.