Tim - I thought about that option too. I just thought that with some people having trouble getting the 243 SL to shoot well, maybe I would not steer him that way. I suggested the 243 compact as an option, but it will not be as light as yours for sure.
kawie - I understand the shortness of the barrel being in a tree stand, but the light weight part, I am not so sure about. At least around here, most guys only have to walk a few hundred yards. Once you get up in your stand, the weight is not going to make a lot of difference. A lot of guys use a gun rest on their stands. I know of several that actually add weight to their guns to tame recoil, making them in the 9-10 pound range. If you were a stalker I would certainly understand your concern for a light weight gun. But that is just my thoughts, every one has some thing different in mind, so if you really want s light weight, you probably could not beat Tim's set up and it only has a 20" barrel to boot.