GSP814,
Sorry to be slow in getting back.
The M75 was 25-06 and the M85 is a 30-06.
Recoil in the M85 is not bothersome at all (and I'm in my late 70's). My only problem is, 30-06 seems to be an unlucky caliber for me. I have only once gotten shooting when carrying this caliber and was unsuccessful that time due to heavy brush. For many years my main rifle was a .270 and I had great success with it!
Jim
