I'm not knocking the 300 Black out because I don't have one. So I was interested in finding out more about this very popular cartridge.
In my research I found that about the best it could do with a 150 grain bullet was just barely over 2,000 ft/sec in a 16 " barrel. in a pistol velocity would be down from that 2 to 400 ft/sec. Add distance (50 yards) and the 150 grain bullet would be at or below the minimum design velocity of 1800 ft/sec for performance, and you could not expect it to perform perfectly every time, or even most of the time.
I also ran the 125s and found that the best velocity you could expect was around 2400 at best. the subsonic velocity was just over 1000 ft/sec for the 125 and 871 for the 150.
So it looks like the bullet does not have much of a chance to perform at these velocities. Full penetration is easy as long as the bullet does not fragment and damage could be compared to an arrow with a lot
less velocity and energy. In fact many times when I was bow hunting a field tip was used for hogs when they were not good to eat and the desire was for them to run off and not mess your deer hunt. (The arrow normally made a complete pass through). but the hog still died.
Again, not knocking the 300 black out but in my opinion you are asking to much of the cartridge and the bullet when hunting larger game like deer and hogs.
Just my opinion
J E CUSTOM