bullet technology appears to have finally caught up with a caliber that used to be considered inadequate.
Well why not? Everything else in shooting is advancing in leaps and bounds, and so have bullets.
I think Brian hit the nail square on the head here; 25-30 years ago, I flat out considered the .223 to be only
very marginally adequate for (very small) Central Texas whitetail deer. A big buck might weigh in at 100 pounds, field dressed. The only bullet that I was then aware of that was suitable was the 63 grain Sierra SMP.
Well, it's not 1980 any longer, and there have been
tremendous improvements in bullets in general, and .224" bullets specifically. With our Army and Marine Corps scrambling to find a suitable bullet for the war in Afghanistan, that trend continues.
I still would not personally choose a .223 for deer, but that's a personal choice. I don't run around thumping my chest, shouting that the .223 is only suitable for rodents. If all I had
or could shoot accurately was a .223, that is what I would use - with suitable ammunition.
Too many people have been turned off from shooting because of recoil! IMHO, probably the worst thing a mentor can do is to force a new shooter to shoot a gun that they're frightened of - be it recoil, noise, or whatever - that's frightening them.
Shot placement is king; penetration is queen; everything else is just angels dancing on the head of a pin. Regardless of what caliber you're shooting.