I haven't been on HNI in quite a while, but as for Savage rifles, I can only speak for the 110 version. Mine is from the late 90's (back when Savage Arms was faced with Chapter 11 bankruptcy or something like that).... They took the long action models and merged them with the short action models, using only one rifle stock. It saved them countless dollars in the long run, when you look back and research it.
This is my Savage 110, but yet chambered in .308 with a long action stock, chamber, bolt, etc... What Savage did was, they manufactured a "block" of some sort in behind the internal magazine, thus shortening the long action into short action. Like I mentioned, the creation saved their a$$ when it was all said and done, and they rebounded and survived!