Animals are impossible to penetrate even by 12,7 the only animal that can be penetrated is a chicken, but its very rare.
Zubr revolver has too big penetration, much bigger that 6.5 rifles. Pistol bullets with much bigger penetration than rifle bullets???? WHAT A ****?
On the video you can see shooting 12,7 at different animals and shooting .45 zubr, mx rifle and .45 pistol at tire and terminal ballistics of the bullets.
I also tested zubr and mx rifle vs bulletproof glass (not shown in video) and zubr was destroying bulletproof glass much quicker than MX rifle.