Here is a link to a belt catalog with technical specs, horsepower ratings etc. This is just one of many manufacturers. The Savage uses a Bando brand belt. It has 133 teeth, is 40mm wide, with a 14m pitch.
http://pdf.directindustry.com/pdf/cross-morse/timing-belts/20096-124381.htmlA standard with many companies is 135 teeth and 1890 long, so the standard size is 28mm longer, you would need to move the wheel back by about half that or about half an inch, that is quite a bit when you look at the adjuster. Bando might have a standard of 133 teeth but as Routy said, it may be made for this bike only. Belts are easily made to length for industrial users who buy in batch quantities.