I have a .30-30 AI barrel for my contender. I put a Limbsaver slip on pad over the factory pad, and the LOP is better for me. When I use the gun as a youth gun, I take off the Limbsaver and the LOP is about right for the kid. I am using 150 gr. Remington Core Lokts at .300 Savage velocity. Works like a dream. I am considering using 125 Noslers to further reduce the recoil.
All in all, it fits my needs very well. During the summer it wears a .223 barrel for varmints, and in late September or early October it gets the AI barrel back. I chose this setup because I am a lefty and I wanted a rig that I could use as well as the kids.
Leon