it is a shame, Elmer Keith had one and wrote about it

by cable, Monday, November 11, 2013, 09:04 (4035 days ago) @ Slow Hand

i saw that article somewhere; here is a short blurb about them:

" The Mossberg Palomino was a rare departure for O.F. Mossberg & Sons. Renowned for their bolt action repeaters, semi-automatics and pump shotguns, the Palomino was Mossberg’s first and only venture in the lever action rimfire market. Introduced in 1959, the main feature of the Palomino was that it was hammerless with a fully enclosed breech. This was designed as a safety feature in case of a burst cartridge or gas leak. The lever action is extremely smooth and fast. The 400 Palomino was a 24” barrel rifle while the 402 Palomino was the carbine version introduced in 1960. Famed writer, firearms enthusiast and innovator Elmer Keith described the Palomino as, “about the best lever action I have ever used”, and “quite accurate as well”.
These were made before serial numbers were required in 1968. The rifling is called AC-KRO-GRUV, and this thing is a little nail driver. Steel plate shooters take note, this would be a great gun for competition. These are becoming rare to find, especially in this kind of condition. If you like neat lever action rimfire rifles, this would make a great addition to your collection. A really nifty little rifle...."

they can be found for reasonable prices and often like new condition.