the buffs were shot using ruger mk1 rifle in 308 shooting military fmj ammo with headshots
https://www.youtube.com/watch?v=OneyeUxzL40from the people I have spoken to that hunt sambar I have found that the 308 is a popular and successful round for sambar
where people go bigger is because they want the animal to drop on the spot with chest shots
there's nothing worse than having to go bush to try and locate your animal, I think most people would fail finding a downed animal in thick scrub
one guy I know uses a 12 gauge with slugs and can eat up to the hole as there is no bad bruising, but they are quick close chest shots
shot placement and projectile are what matters IMO
“If you do not read the newspapers you are uninformed. If you do read the newspapers you are misinformed”. Mark Twain