Marlin 336 old vs new. Marlin’s stable of lever-action rifles is legendary, and perhaps none more so than the Model 336. Which isn’t cheap but with todays prices seems decent. com is a community of Marlin Firearm Owners - Dedicated to discussing Marlin Firearms, Marlin Rifles and more. Nowadays it comes as no surprise to see a Model 336 in . I may try to obtain an octagon barrel rifle of at least 24". An older model 336 RC and a newer model 336 C are compared. I am finishing up the last part. 308 Marlin Express or . I have only heard good things about the accuracy of the later models, and prefer t Marlin Lever Action Rifle Serial Numbers 1883 to 1906 (Including Models 1881, 1888, 1889, 1891, 1892, 1893, 1894, 1895 and 1897. 45-70.