BobinNH: There was a poster here for a while that advocated the use of a 340 Weatherby Magnum for Mule Deer Hunting "out west"!
AND to make THAT even worse he advocated shooting said Deer with said Rifle "through both shoulders"!
He was ridiculed and ostracized and lectured (often by ME!) til he must have lost interest in posting that crap here anymore!
Your point is valid!
I often cite my friends (a family of 5 women and 1 man) here in SW Montana who harvest 20+ Deer EVERY year with the "family 223"!
And some of these are large Buck Deer!
In fact we all went on a trip to eastern Montana a few years back where the 14 year old daughter in this family killed a 31" wide, VERY mature, Mule Deer Buck with one shot from her 223 Remington!
I know that Buck was 31" wide because I measured it myself!
That feat followed by just 2 years her harvesting a Mt. Goat (again with one shot!) with the same 223 Remington caliber Rifle!
That full body mounted Mt. Goat now adorns the wall of that families trophy room!
Bullet placement and bullet construction are two VERY important components of cleanly harvesting Deer size game.
No, "magnums" are NOT needed to harvest Deer.
Hold into the wind
VarmintGuy