It is not that the seller on ebay is necessarily dishonest. Folks love to jump on the bash ebay bandwagon.
The savage has been for more than a few years now and it actually comes in more than one action length.
the following is from Sharp Shooter Supply's Tech update page
"Savage Centerfire Action Lengths
Savage Centerfire Action Length Identification. To help determine what action you have, here are the action screw center-to-center measurements.
Long Action: 5.062" (all years)
3rd Gen Short: 4.400" (2006 - present)
2nd Gen. Short: 4.275" (1998 - 2005)
1st Gen. Short: 4.522" (1959 - 1988)
Additional Notes:
- The 1st Generation Short-Actions are today commonly referred to as "J-Series". This is incorrect as a "Series" designation simply refers to a slight design change. Rifles marked "Series J" can be either a 1st Gen. short-action or a long-action.
- The 2nd. Generation Short-Actions comprise most of what you will run across.
- The 3rd Generation Short-Actions are the newest production models and can be easily identified as they will have the new center-feed magazine system. The only exception is rifles originally built in .223 Remington or .204 Ruger as Savage has yet to release a center-feed magazine for these smaller diameter cartridges.
**The best way to remove any doubt as to which generation of short action you have is to measure the action screw spacing."
see the link below:
http://www.sharpshootersupply.com/TechUpdates.html