Huge puff of smoke out pf my type 53s action after firing this round and complete case split. This is from a gunshow bag of ammo. I've shot a lot of surplus 7.62x54r and never had a reaction like this. Its not the standard russian stuff. Anyone know what this ammo is? Will be discarding the other 30rds. https://www.milsurps.com/images/impo...7eb1a79f-1.jpg