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I also have the TC Encore in 24'' SS 280 and it's a tack driver. Also have the blued 24'' 06 and 26'' SS 7mm and it's a tack driver too. Have 2 blued 15'' 308 barrels, 2 blued and 1 SS frame, don't ask me why I have so many. I can't figure out why they can make a 300 mag barrel but not a 7mmRUM barrel.
.45-70. 0 at 100 yards, 10" low at 200. .500 S&W 0 at 100. 20" low at 200. If you like to hunt up close and personal go for it. Otherwise I wouldn't bother with either of your 2 choices for a mountain rifle.