Can't tag animal multiple times in Dead Eye...WTF?!

Hi all!

So I've finally decided that it's time to get me some satchel upgrades (I've been begrudgingly dealing with the default storage capacity for four chapters now!) so I'm going to spend the entire day tomorrow hunting.

Only problem is, I've noticed in the past that you can't tag an animal multiple times with R1 like you can with enemy NPCs. Is this a bug in my game or an intended feature? If the latter, it seems like yet another oversight from R* to me...

I understand that to get a perfect pelt you should always use the correct weapon and ammo for that animal, as well as shooting whatever areas come up red in Dead Eye only once to get a clean kill. But with the Legendary Buck Antler Trinket, I reckon we should be able to blast the shit out of a 2 star deer with a shotgun, and still get a perfect pelt. Otherwise, why the fuck did I spend 2 fucking hours hunting the goddamned thing (that particular animal seems to be badly bugged as well; had to spend ~90 mins running around in circles to get the first clue to spawn)?!

I'm also confused about how exactly the trinket works...read this whole post but half of the comments are contradicting the rest. Has anyone tested this extensively and proved beyond a doubt that 2 star animals will be upgraded to 3, as long as the right weapon/ammo is used? Or that weapon/ammo doesn't matter, as long as the animal is 3 stars to begin with? Or both?

MTIA for any and all answers! I'd also like to hear everyone's opinion on these matters. Cheers! :-D