Reply from a non CPunks friend: ==================BEGIN FORWARDED MESSAGE================== Hummmm ! I have loaded 7,62 and .308 cartridges in my L1A1 ( FN variant made by Lightgow ) and in my FR8 ( spanish bolt action carbine ) without any problems. One thing though ! When you reload a military brass, you should always, always, reduce your first (tests) charges of about 10%. Reason. The military brass is thicker, so there is less space (volume) in the cartridge to accomodate the powder. Not a problem when you are using BLC-2 or other similar powder, since the full charge that I was using was filling the cartridge up to the neck ( 52 grains of powder over a 125 grain softpoint bullet). So, if by mistake, a military brass would have mixed with my "federal" brass, I would have had a big mess on my reloading press.... and not in my face. I always used the same technique with all the calibers that I reload, and always developed powerfull but safe loads. Apart from an empty case volume, I do not see any problem using 7,62 or .308 ammo in the same rifle. After taking a look at the M1A1 rifle that blew up, and especially at the split shell and almost ejected primer, the only conclusion that I can come with is : a.. The wrong type of powder was used ( faster burning rate like pistol powder ) ; b.. Something was blocking the barrel ( pine needle, small rock, forgotten (!!!) cleaning cloth, etc ) preventing the bullet from exiting, and causing the pressure inside the barrel to exit through the weakest point of the rifle....OUCH ! c.. Looking at the primer, some extraordinary pressures develop in the barrell ! d.. So, if the barrel started splitting apart near the chamber, that would explain the split case ! Glad it wasn't my rifle...and my face ! Regards, ===================END FORWARDED MESSAGE===================