What do you recommend for a hunting rifle?

im 14 years old i live on a cattle ranch in canada. i have began hunting. i have 2 .22’s and a 12 gauge shotgun. what would you recomend as a high powered hunting rifle? i have narrowed it down to two guns that i can have thru many hour of research. what gun should it be the remington 7mm magnum or a 30-06 of some sort?
well yes i miseed a few key points. i already have a trusty 30-30. and my needs for a riffle are mainly for shiping pests from 300yds+. and for defence from local pests (in september a very close friend of mine was killed by a bear a mile from my house. and i have found cougar and bear tracks within 1000 feet of my house.

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