u/Advanced_Lettuce_663

So ive checked some tutorials but im still confused, i started a few days ago but ive been getting bored of the free maps so i hopped into multiplayer savanna and killed a lion but couldnt harvest it because I hit the wrong organ and used the wrong ammo? Im a bit confused, do i need to use some special savanna ammo or only use shotguns or something any help would be appreciated.