i had a browning stainless stalker a-bolt 300wsm ..hunted moose ,caribou, deer and bears used winchester supreme 180 gr. accubond bullet .all dropped in they're tracks ..longest shot was 350 yds. shortest shot was 35 yds. all with the same results .bang flop ...sold my 300wsm and bought a new savage weather warrior .243 cal ..it will do the same thing with less noise and recoil ..IF I DO MY PART ...bigger is not always BETTER ..accuracy and practice on the range goes a long way .. but what do i know i have only hunted for 45 years ..
Good thing you have 45 years experiance...that way you wont be suprised when , now with a 243, your bang flops wont be so frequent. You cant ask the same performance from a 6mm 100gr bullet as of a 180gr 30 cal magnum..but you knew that