I have seen some 35 whelen's in 760's but most seem to be in 30-06 here, or 308-.270's
there the most common
have sen some 7mm08's and other calibers, but there a little harder to come by cheap, or been my experience, seems guys that want more odd calibers some times are more picky about how they care for them and thus better condition most times and higher prices

After X mas, like lat Jan or info Feb, was always a great time of yr for me to BUY guns at the store, then credit card bills start showing up from X mas buying, and folks start to need cash LOL
keep an eye on places like armslist, bet a bunch show up there soon!