These days, you can get very light rifles in about any caliber 300WSM and below. I learned from experience, its about your health and how you feel to make a Rockies or newfoundland or Alaska hunt a successful joyous one. Its about a positive attitude, which you lose quick if your so fatigued cause all the junk your carrying. So if a lighter rifle is what you need to keep that positive attitude, then its well worth it. Find one that you can shoot, and shoots 2MOA or better, and call it a day.

My first Canadian hunt, I was not prepared physically for the hunt, but didn't know it at the time. I had the best of the best gear. Gun would shoot .5MOA. Had the best handloads I could build. But all that didn't mean a hill of beans when I spained my ankles and pulled my hip muscle. So worrying about a gun be the perfect balance and tearing a ragged hole is like only 30% of it.