I shoot a 10" bull in 357 Max and even without full blown loads, I get a bit of 'jump' or recoil. It's not unpleasant but you'll know it's there. Another thing to consider, in the Contender, is the actual length of the barrel when you subtract the OAL of the cartridge. With a 6 1/2", you could actually wind up with a 4+" barrel.
just my 2 cents
Brian, in Ohio