I have always from day one refused to bed the bottom of the recoil lug because;
1. Recoil lug is for recoil. Not a perch for holding up the barrel.
2. Having recoil energy transmitted down into a hard surface and then back up through that recoil lug into the barrel in my thinking anyway was changing the harmonics of the barrel.
3. Then when the stock does the flex thing do to any number of reasons, humidity,cold,hot weather one will change the Point of Impact because the lug is being pushed from either the bottom or sides.
4. Personally, I have never seen an accustock. I am going to guess however than I will not see one on the firing line of a benchrest match. I know from speaking with a number of smiths who are working with them that they are NOT user friendly when trueing and putting on larger recoil logs.

Neal