I would be a a little leary buying a T3 Lite in a magnum caliber. It is a very light feeling gun to me. My buddy didn't like the felt recoil in a 7 mag in the T3...he ended up trading it in.
Not that I'm afraid of recoil...just a thought...I shoot .300 mags but I'd prefer a heavier, more balanced rifle. I just purchased a 7 mag in the Whitetail Hunter versus the T3 because of the weight and better feel. If you hurry you may be able to find a Whitetail hunter.
If I ever end up with a T3...it won't be a magnum!