Tim50,
I have a 35 Whelen AI in a bolt rifle, so I can't speak specifically to your rifle. The Trophy Bonded Bear Claw bullet that is offered in the Federal Premium ammo is of a superior design to the Remington ammo. Do you need it? I don't know. I would get a box of each that are available and do some careful bench testing for accuracy. For bears, depending on how large, I would steer clear of the 200gr Remington loading and use either the Federal or the 250gr Remington ammo.
If you like to shoot over 5 boxes of ammo a year, or think the practice would be good, I would also encourage you to load your own ammo.