Buckums
AH senior member
What are the possible problems with travel you are referring to?
I’ve added mercury recoil reducers to two stocks with good success. That said, I wouldn’t do it again because of the hazards associated with mercury and possible problems with travel. I sold these rifles quite a while ago.
Tungsten beads (TSS) is a really good option and there are a couple of manufacturers who offer these. Sadly, it’s not often easily adaptable to firearms other than the one it was intended for. My wife has a Blaser Kickstop on her Intuition and likes it. I also had one in my PH stock.
I have no personal experience with the Edwards Recoil Reducer but hear nothing but good things about them.