I guess what I'm looking for is something that is powerful and accurate, cheap to shoot and reload, fun for plinking, but also effective for hunting applications.
.45-70 !!
I spent about 35 years ignoring the Contender, because it was "only" a single shot. Then, one day I handled one, and wow, what a sweet trigger it had!!
Since then I have gotten a couple of frames and barrels in
.22LR
.22 Hornet
.222 Rem
9mm Luger
.357 Mag
.44 Mag
.45 Colt
.45 Colt/.410
.45 Win Mag
.30-30
.45-70
Also have a Rem XP-100 in .221 Fireball.
I do recommend getting Pachmayr rubber grips for shooting heavier recoiling calibers. Also be aware that despite the size of the Contender, it is lighter than a S&W N frame, and so recoil has a much different feel.
I you think you know how to shoot a pistol, get a Contender with a .22LR barrel (10" is good) shoot offhand, and it will teach you how much you don't know.
A 10" octagon (pencil) barrel .44 Mag will try to achieve low earth orbit! First time I shot that one with full house loads, I said a bad word out loud (and rather loundly) at the range!
By contrast the heavy barrel 14" .45-70 (with lots of little holes in the front end) is a solid slam in your hand, but doesn't jump UP as much as the .44 Mag.
HOWEVER, neither is for the beginner. (unless you handload and will load "down" to start with).
One young friend, after watching me shoot several rounds, tried my .45-70, and while he did a fair job locking his wrists, his elbows weren't and he wacked himself a good one in the nose with the red dot sight. Bled a bit, too!
He did hit the target, and after we got the bleeding (and the laughing) stopped, he asked for another. Hit with that one, too, and ONLY hit the target, that time,
My 9mm barrel is a 6" and looks short on the Contender, rather "piratey" (ArrrH!! Repel boarders! ARRR!)
also shoot groups smaller than every semi auto 9mm I've run across, have won a few bets with it. (I bet my 9mm will group better than yours! )
Forget speed, forget follow up shots, focus on one PERFECTLY placed shot. They'll do their part, the rest is up to you.
I, personally don't favor the .308 or larger in my pistols, simply too much wasted powder for what you get.
its a whole different level of shooting and tis easy to go for "too much gun" to start off with. This is one of the benefits to the Contender / Encore pistols, multiple calibers with a barrel swap. Start with something "light" like a regular pistol round (.357 is a fine choice) and get some experience, then decide if moving up to a rifle class round is something you want to do.