I don't know nothing about no .243, trying to stay out of these discussions...
Everytime it comes up someone else tells me that you can't take marginal shots, can't take running shots, can't use in the woods, can't take long shots, can't kill big deer, can't take shoulder shots...
I do happen to have about 15 boxes of CoreLokts stuck back that are 100gr that happen to fit a .243...I've killed more with them than any other bullet going back to 1980...
I also like that 85gr Sierra GameKing HPBT, but it really shines past 200 yards...The Federal Premium 100g Sierra GameKing SPBT and the Hornady InterLokt SP are also good loadings...It's hard for me to justify the price difference in other loadings when I have complete confidence in the CoreLokts...
There are a couple of things that I really like about this cartridge...I'm right handed but have killed several deer left handed that slipped up on the right side where I couldn't stand up and turn around...Also, since it kicks so light, you never lose sight of the deer in the scope...
We kill 40-50 deer a year on our farms, my brothers, nephews and friends have .270s, .280s, 7mm-08s, .308, .270 WSM, .260s and the like...I've killed deer with their guns and skinned and tracked deer with those calibers...
When a deer is lost, it's not the guns fault, it's the shooter...
I guess if a guy is going to gut shoot a deer then a larger caliber might put the deer down quicker and leave more poop to track...
I just prefer not to hit them there...
I will say this, shoot a cartridge and gun that you like, life's too short to shoot to hang around with a gun you don't like
(or woman)...