I've shot many many elk.
i shot 1 with the 243
its the only one i ever shot that didn't get a ride in the truck
.
and i shot it 3 times in the boiler room.
when i got home i went out and bought a elk rifle.
i think mule deer is the max sized animal with the 243.
all that being said the 243 IS my favorite rifle its just not a elk rifle.
my cousin lost a spike hit once in the boiler room and once in the neck with a 30-0-6 180 grain bullet
i went to the 300 mag and no elk has taken a step since.
kinda like takin a knife to a gun fight in my book.
as far as legal caliber the smallest legal caliber for big game doesn't meen its good for large big game what is fine for goats and whitetail doesn't make it the right choice for elk or buffalo.
i wish I'd have taken pictures of some failures I've seen on mule deer with the 243 to put this thread to rest.
what i have seen out of the 243 is why i bought a 270 for mule deer. the 243 isn't the best on them either, works in a pinch but isn't my recommendation in calibers.
as far as the kick, if you can't handle the kick of the mule - get out of the pasture. only time you feel a kick is shooting at paper get a lead sled. with a bull in your sites you will never feel that 1 shot.
what good is a shot in the boiler room if it stops before entering the chest cavity. seen it in elk and on mule deer.