Cleaning out a storage area (air conditioned, heated and clean) I found literally a barrel (although in boxes) of mid-1940 to mid 1950s military ammo in 38 special. I've had no issues firing the same vintage .45 ACP cal ammo. Have had no problems with that. So, I put about 100 rounds of the .38 ammo through my revolver with a about 50 rounds of modern stuff mixed in. Amazing - couldn't tell the difference (with one exception - there was evidently issue ammunition of that vintage made with steel cartridges - these weren't very consistent - I've since weeded them out. Have any of you shot any of this very old stuff? Any cautions? Anyone know why the still casing ammo would not have held up as well as the brass casing stuff, (or maybe it was never any good)?