I had called Stoeger in Canada (the importer for Sako/Tikka in Canada) and the fellow told me the TENON is the same on the Sako m75 as the Tikka T3 but the headspace maybe different and should be inspected and adjusted by a gunsmith.
My situation was I had a new 25-06 stainless barrel off a new Sako m75 Greywolf for sale ( I built a 338-06AI). A guy that was interested had a Tikka T3 rifle or a Sako m85 rifle. As long as it was the proper action size for the caliber, should work.
I would call or email Beretta USA and they will answer your question for you. If not, try Sako's website. Another place to ask to would be the Sako Collectors forum site if no answers here.