The P17 actions are wonderfully strong but heavy. I use them a lot for my LR and SR hunting rifles.
With the Eddystone, you should have the action magnafluxed (do it with all surplus actions) just to make sure there are no cracks. Simple and cheap to do - go to any engine rebuilding place ($10).
Cock on opening kits are available from Numrich is you want to change. You can tune the orig trigger to a very nice single or two stage. Timney makes a great replacement trigger too. If you use a Timney and a cock on opening kit, the hammer will need to be extended so that it contacts the sear. A simple blob of weld and some filing solves that problem.
I have wonderfully success with these actions. Just a few pics to show some off. Good luck with your project.