I recommend getting into single shots with barrels that you can swap.
I'm into T/C Contender carbines and recently T/C Prohunters barrel lengths are from 14" - 24".
I have muzzle loader, centerfire and rimfire barrels for them from 17 Rem - 22LR - 410 shotgun - 375H&H - 50 cal muzzle loader and many others in between.
I can hunt anything in the world with one or more of my barrel/load combo's.
Just yesterday I finalized the purchase of a s/s 14" 45-70 Contender barrel mounted onto one of my Contender frames overall length is a super short 29 1/2" if this barrel turns out to be as accurate as my other Contender barrels I'm good for 200 yards on game I'm planning on using it for still hunting Blacktail deer.
I do have to warn you to be careful though these rifles are addictive.
These rifles are so addictive/fun to me that I am now considering selling off a few of my other rifles and putting the money into more frames/barrels/stocks.