Not sure what you mean by trigger travel...? What are you shooting off of? (Bags or Bipod). I think you're going to need to upgrade your stock to something like a Boyds before you'll see an improvement in your groups... That Tupperware stock can be squeezed up against your barrel just by setting it on bags... A bipod may even be worse.

Grab the for end of your stock and give it a squeeze... I bet you can get it to touch the barrel without much force.