It's that time of year again, the time when I think about buying a new rifle
I've been going back and forth between standard and magnum cartridges. Rifles for standard cartridges often hold five, whereas the same rifle chambered in a magnum cartridge will hold three (I don't hunt with a hot chamber). That got me wondering, how often do you need more than three? I've never needed more than three, but I'm not nearly as experienced as most on these boards, so I thought I would ask for your input. Is three verses five cartridges ever a big deal when big game hunting?
If you carry a weatherby magnum, for anything smaller than mature bull elk, you don't need ANY, you just yell over the cartridge you're using. Upon receiving the notification, the animal in question will (in one fleeting second) remember the stories passed down through the generations of that cartridge's feats of kneekillitis and then die immediately on the spot. A proper autopsy will, of course, reveal a stress induced heart attack.
But seriously, I think too many variables are in play in true field conditions to give one all inclusive answer. Ideally, yes, shot placement and power will end the hunt in 1-3 shots no matter which cartridge you're using. However, out of the numerous hunters just on this continent, 3 have shared instances where quantity was required on a single animal. Years ago, a record Kodiak was taken by a 7mm Mag semi auto. The shooter was deer hunting with 150gr ammo. The bear, reportedly, charged him and (I can't remember the actual distances from this incident, I'm sorry, it was close to 12 years ago I believe) the hunter fired, emptied and reloaded his weapon twice. I don't know about his shot placement so we're not going there either. The point is, sometimes enough is NEVER enough. A whitetail or pronghorn (especially with adrenaline pumping) can literally be shot to doll rags before they go down. Obviously an adequate weapon with adequate placement is ideal.
I've hunted with .243 clear up through the .300 rum, and having witnessned solid boiler shots not consistently put an animal on the ground in a timely manner every time, I frequently practice follow up shots including reloads at the range. My personal rule is, if two in the chest don't STOP it in less than 50 yds, it's time to break big bones, most critters don't run far with broken shoulders and most deer don't get back up. How many extra shots will depend on the shooter, but the difference between a magnum and standard alone will not be enough to guarantee how that scenario ends.