Ahh.... black powder.... at one time we had a two-pounder muzzle-loading cannon on a wheeled carriage... loaded it with extra powder, several pounds of .45 cal round balls, lit the fuse and ran like hell. The smoke cleared sometime later, the cannon was some distance away from where it started, trees at the pointy end were somewhat worse for wear and our box of beer was somewhat depleted. The silliness of youth...
BTW, the FAL series of weapons is useless on full-auto. Yes, I know the match-stick trick. The AR-10 was much more fun, albeit expensive. Hated the H&K G-3 in comparison.