need info on recoil-supressor

[300ultramag]

i need some info or a web-site where i can purchase a in the stock recoil-supressor. i have a browning abolt with a synthedic stock in 300 ultra-mag and its killing my shoulder.

i think they are gas supressors -- you have to bore a hole in the but end of the stock and then drop it in . its a metal cylinder looking thing.

any help will be great-- i got 1 website but no luck.

thanks