having TOTAL confidence in the rifle and cartridge you use is a HUGE factor in making you both enjoy and not worry about your potential success.
I have guys bring up questions , concerning the suitability , range limitations and other factors,that many guys bring up concerning the rifles they select to hunt with,
its been my experience that most of the guys who might stay up nights worrying about their rifle or cartridges potential ability to kill at extended ranges ,
or might worry about the rifle they use, suitability, lack of rapid repeat fire potential, range limitations, or potential lack of lethality,
well, many of the same guys both lack extensive field experience and hands on practice, once you've made a few dozen hunts,
and got in some actual experience,,the concerns over your personal choice in equipment selected seems to fade, or changes get made.
my late hunting partner came to love and depend on a browning BLR in caliber 358 win, for both ELK and mule deer,on several occasions we had new guys in the club ,
ask him if he felt he was at a distinct disadvantage, after all if he sighted the rifle in using the load he came to depend on (44 grains of imr 4064 under a 250 speer bullet)
it was, 3.5" high at 100 yards, dead on at 200 yards and about 10 inches low at 300 yards (certainly a 270 win or 30/06 Springfield, shoots flatter,)
at first that question bothered him a bit, but after hunting for 30 plus years he would just smile,
and point out that he had never once even seen any elk out past about 250 yards, thus the concern over flat trajectory was a non-issue in his experience.
and the lethality of that BLR in his hands was well documented.