Class 3, 5, and 6 rifles.

[Luke]

So I just shot a decent hog deer with the 243, despite a perfect broadside angle, really solid shot placement just behind the shoulder and poly tip ammo it failed to get double lung and I had to chase the deer for hundreds of yards, very very disappointed with the performance but at present that is the best option we have for class three on open ground as the only dedicated class 3 rifle has even less penetration. When you plan the next weapon pack please consider filling the gaps that you have in your current layout.
Class 3-7, the best class three caliber of all time is the 6.5mm I don't care what anyone says, but since this game has already made it a class 4-8 you should consider the second best class three caliber of all time and that is without question the .257 caliber the 25-06 would be my first choice in that bunch, flat shooting, accurate, and drops everything in the small deer category like a bad habit without blowing them to bits like some larger calibers often do.
Class 5-9 358 caliber hands down, 358 Win or 35 Whelen. Put either one of those in the DLC and sign me up.
Class 6-9 How on earth do we have a game without a 375 H&H arguably the most iconic truly big game hunting cartridge of all time, just so happens to be an ideal fit for a class 6-9 rifle.