I have two Remington Ti actions. I had one rebarreled and the other has the original barrel but rechambered to a .284 Win. Galling is not an issue given the design using a hard steel bolt running against the titanium action. Generally galling becomes an issue when driving two materials of the same type and hardness together, stainless steel is known for this issue - note stainless steel actions generally have a hardened steel bolt.

I'll agree the actions aren't the smoothest but they sure are the lightest. No high round counts on either of these rifles nor any sign of set back.

Good luck with your project.

The difference between genius and stupidity is that genius has its limits. Albert Einstein