Funny, other than the OP I have not seen any mention of the Ruger No.1 or No.3. In some ways they are not the best but in some ways they should be ranked with the best. I wouldn't be surprised if there are more of them floating around than any other falling block single shot action. Love them, hate them, they've made a beeeezilion of them since 1967 and they are still making and selling more.

These guys list 355,700 Ruger No.1 rifles made from start of production thru 2016. As big as that production number is it does not include production of the Ruger No.3 rifle. http://www.classicsportingarms.com/ruger...roduction-data/

The factory chamberings have been:

.204 Ruger, .22 Hornet, .218 Bee, .222 Remington, .223 Remington, .22 PPC, .22-250 Remington, .220 Swift, 6mm PPC, 6 mm Remington, .243 Winchester, .257 Roberts, .25-06 Remington, .264 Winchester Magnum, .270 Winchester, .270 Weatherby Magnum, 6.5mm Remington, 6.5×55mm, 6.5x284 Norma,7×57mm, 7mm-08, .280 Remington, 7 mm Remington Magnum, 7mm STW, 7.62x39mm, .308 Winchester, .30-30 Winchester, .30-40 Krag, .30-06 Springfield, .303 British, .300 Winchester Magnum, .300 H&H Magnum, .300 Weatherby Magnum, .338 Winchester Magnum, .357 Magnum, .375 H&H Magnum, .375 Ruger, .375 Winchester, .38-55 Winchester, .404 Jeffery, .405 Winchester, .416 Remington Magnum, .416 Ruger, .416 Rigby, .45-70 Government, .460 S&W Magnum, .458 Winchester Magnum, .458 Lott, 9.3×74mmR and .450/400 Nitro Express