Here's a qoute to back information on the 250Savage in a Marlin 336 rifle.

In the 1983 issue of Handloader #105 Sept-Oct issue, Layne Simpson was writing an article on the then new 307 and 356 Winchesters and while discussing the possible ways of improving the 307&356 he mentions the Marlin 336 built in .250-3000Savage.
"Another possibility is the use of a spiral-type magazine tube, like those on the old Remington Model 14 and 141 pump rifles, to keep bullet tips away from primers. Marlin once built several Model 336 rifles in .250-3000Savage with this kind of magazine, and it might be a good idea to pull such a concept down off the shelf and dust it off."

JDW