My 2 cents worth:<br><br>I think that the entire set of attributes would be very difficult to come up with unless you have a substantial amount of money to invest. The barrel liner issue is a bit tricky in a .308 - your working outside diameter will be 0.300" (minus), as the top of lands are that diameter. The liner can be made strong enough, but the firing pin position has only awkward solutions and the liner itself would be extremly fragile outside the rifle barrel. A larger bore, like a .358, would help, but there are still issues.<br><br>I think it depends on your locale and the fauna that inhabits it. My inclination would be to drop the .22 rimfire. My solution on extended trips in remote northern areas has been reduced loads with cast bullets and they have been superb for taking small game. These could be done with conventional jacketed bullets as well, although the loading data is more difficult to come by. However, the bulk of reduced loads is equal to the bulk of full-power loads, and the weight is nearly identical as well. Also, these are considerably more powerful than 22 rimfire - and significantly louder.<br><br>If the big game rifle must be in a bolt action and you are adamant about also wanting .22 rimfire, is a .22 pistol an option for you? That's a lot simpler.<br><br>As for the rifle itself, I think a "Scout Rifle" would be a pretty good choice, as would something like a Remington M7 or similar rifles, although it will be difficult to get one to float. Savage makes a nifty inexpensive Scout rifle, or there is the (expensive) Steyr. It looks like the Savage is a lot of rifle for the money and like the Steyr is a real sweetie. It's not hard for me to switch to the extended eye relief 'scope and back, but it IS a shock the first time you look through one. I have made 3 Scout rifles so far and find the concept quite good - my boys won't use anything else most of the time. Ironically, the Scout rifles I have made are 6.5x55 M96 Swedish Mausers <grin>. Very compact, very accurate, very effective, and so-so for weight by your criteria (one has synthetic stock and it's noticably lighter). Both Leupold and Burris "Scout Scopes", and I would give the Burris the nod over the Leupold, personally, with apologies to Col. Cooper. Ashley mounts and eventually all will have ghost ring sights as well. Smarter to buy the Ashley sights, I guess, but I'm machining my own instead.<br><br>Otherwise, I'd second the T-C suggestions. Seems like that could be adapted to fit most of what you stipulate except "bolt action" without spending a lot of money for customizing.<br><br>Regards,<br><br>Scouter Tom