I have used a .243 since 1980, it's the only centerfire that I own and I have killed over 150 deer with this gun...
I have used about 10 different factory loadings, all killed deer, with some the deer just dropped (with lung shots) closer than others...
With harder "premium" bullets the deer actually ran further than the regular cup and core soft points...None went over 100 yards and
most dropped within 60 or so...
About 85 were killed with the Remington 100gr CoreLokts...Inside of 200-250 yards it does all I need to do...
When hunting fields where shots can be 150-300 yards, I also like the Federal Premium 85gr HPBT GameKing...
At 3320 fps you can sight in 2 1/2 inches high at 100 yards and you are about 2 1/2 - 3 inchel low at 300 yards...
It also retains it's velocity, so it is going fast enough at longer ranges to still mushroom and give good wound channels...
If you have shots inside 50-75 yards, this bullet is moving fast enough to fragment...I shot one deer at about 20 steps
with this bullet, the deer went less than 25 yards with a lung shot, but the bullet didn't exit...
If your gun doesn't group the CoreLokts well then I would use either the Hornady Custom 100gr soft points, the Federal
Premium 100gr SPBT Sierra GameKings, the Federal Classic 100gr HotCores or the Federal Premium 100gr Nosler Partitions...
My rifle had a 22 inch barrel when I bought it but I had it rebarreled a few years back and went to a 24 inch...
I don't think a man's build should have anything to do with what he shoots, he should shoot what he wants to as long as it is legal
and lethal for the game persued...I carry my .54 caliber flintlock, loaded with a patched ball more than I carry the .243...If you
looked at energy tables of a round ball, they are pretty pitiful on paper, but lethal on deer...I'm 6ft 5 and weigh about 250,
none of my hunting buddies have anything negative to say about me shooting a .243...Frankly, most have gone from larger calibers to a .243...
As far as bang flops, put that bullet through the shoulder blade or high in the lungs and you will see bang flops...