What are your feelings on a single shot? The Thompson Center line has been in my safe's for a lot of years now and all have served me well. The also have a fine "newer" line of bolt actions.

With the single shots, you will have the versatility of various calibers along with the light weight you need. With my age advancing on me like a runaway train, I too know the need for a light weight rifle. Getting a bit recoil sensitive as well but not so bad as to HAVE to set my big bore babies down just yet.

I personally would search for a good used "action" and then order whatever caliber barrel you want. Could probably pick up the "action" for lower than 400 and a really well made barrel for 200 or so.

I really enjoy shooting my Pro Hunter because of the Limbsaver tech in the stock. Makes my .338fed barrel feel more like a well behaved .308.