Damn, that sucks! I looted 7 in about the same amount of ammo last night. Although that was from a mixed bag of Atrax, Armax and Longu around 17632,13711, NE of Jason, and I didn't note when they dropped.
I got a single stack of about 50 PED worth of Fine Hide in a Neconu HoF a few days ago.
That's obviously not normal loot, and having camped Neconu for a little over a week now I don't think I have got a particularly large amount of Fine Hide, other than that one loot.
Might be worth a shot though.
I didn't notice your hof grats oleg..
That is an amazing stack of fine hide