Hi HM2...
"
Let me guess, the .243 is adequate for this and therefore there is no reason to use something more powerful, right? "
No, the poll/question was not a lead-in for me to get on my ".243 soapbox", your snide assumption notwithstanding.
It's a straight question intended to generate peoples' thoughts about what rifle/caliber/sights they
really need for their hunting - or which ones are
entirely viable for them.
Thought that might be an informative and refreshing change from the unending "Ya
Gotta Have a $12 Bulgarian Milsurp in 30-ought-fuddy-duddy with a black, 3-way collapsable stock/rangefinder unit, 400-round magazine and topped with a $12,000 Schlitz & Bentup 38x212x65 scope shooting 666-gr. FMJ bullets from Lexus in case you need to shoot end-to-end through three World Record Moose and a charging Grizzley bear at 1000 yards, after buying your ammo in a coconut vendor's hut on a deserted island in the middle of the Pacific."
Hopefully some people will be along to offer their thoughts on what is
really needed for hunting tools, as opposed to all the lore and marketing hype and self-aggrandizing schmaltz. Please feel free to offer your own take on the questions. Everyone's thoughts should be interesting if they address the topic as it is with some semblance of sincerity.