I figure that for around $2k I can have a pretty good .22 OR a pretty good .308. For the cost of ammo I can shoot the smaller gun about 350 times or the bigger gun about 20 times.
With either gun, the scope will cost more than the gun. Heck the base and rings are nearly the price of the gun. Anything you add to one, add to the other (bipod, sling etc) all that stuff costs the same for either caliber.
Sgt Lumpy - n0eq