Ah, I see, purpose-built! I thought you might have been working on a turning fixture. What you're doing is even better.
I love Remmys to death, but I'm getting bored too. I buy em, tear them down, blueprint the receiver and bolt, do a few tricks, but it takes a lot to make them tight. I've tried sleeving bolts, reaming raceways, oversizing bolts on custom order, silver soldering and re-cutting to fit parts together better than the factory. I've come to the conclusion that those actions are for hunting rifles. For a few dollars more than a base rifle, there are actions that don't need any machining straight from the factory... Now it's more interesting to accurize something uncommon, just for the challenge. Is that how you fell on Enfields, or is it a competitive division somewhere (military silhouette, maybe)?