I have yet to try shooting the bedded T3's and A7's. They already shoot real good as is.
The stocks are actually pretty stout and well engineered compared to all of the other brands of polypro stocks I have worked on. The Finns build good rifles for sure.
I will let you know if the accuracy improves.
The article "stress free pillar bedding" has some good info. I changed release agent based on this guy's recommendation and started using steelbed which is close to Devcon as near as I can tell. This stuff is waaaay easier to work with than acraglas.
Stress-Free Pillar Bedding