Some models are known to have different twist rates depending on year of manufacture, particularly the 30-06, but I did not physically checked all the rifles I had / have them all myself, but I can state that most of the rifles I checked are like I previously posted. The numbers I posted above are those published by HVA and Tradewinds.
Anyhow, they all tend to shoot quite well.
The published twist rate for the 9.3's are published as being 1:14 (1:360mm) and all 4 I have in hands now are that way, plus the 1640 I recently checked. These includes a 46 and a 146 (9.3X57) and two 649 (one M/38 and one M98), but I do not exclude there might be exceptions.