Contenders are not able to take rifle cartrides like the Encore. It has to do with the pressures involved, and the size of the rounds. A Contender will handle .30-30, .35 Rem, and .45-70, but not a .308 or .30-06. For rounds like those (or based on those) you need the Encore.
Recoil is very...individual. The beauty of the Contender is that all you have to do is hang on enough that the gun doesn't hit you, or the dirt. It is, however, something you have to get used to, and manage properly.
Example: Friend of mine was watching me shoot my 14" .45-70 (ported, with a red dot sight). Even watched me shoot it one handed, offhand (a chore, but it can be done, if you are strong enough
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He shot it, and while he had locked his wrists, he didn't with his elbows, and the gun came back and wacked him on the nose with the edge of the red dot sight. Bled a bit. He did hit the target, and after we got the bleeding stopped, shot it again, hitting the target, and not himself.
My Contender in .44 mag with a slender unported 10" barrel jumps up a lot worse than the heavier .45-70 does! Really surprised me the first time, so much so I said a bad word at the range!