Meloniting:
I have had ParkerTrutec MMI do several barrels, actions, bolts, bolt parts, triggers, sears, cocking pieces, bolt shrouds, muzzle brakes and barrel caps.
I would only recommend doing only new aftermarket high quality barrels. It should be properly chambered, crowned, and engraved. Then cleaned and fired 10-20 times. Then cleaned both chemically and physically (with brush). I use a regimen of both carbon and copper solvents. There should be no carbon or copper fouling in the barrel when sent for meloniting. The factory barrels that I have sent required extensive cleaning after meloniting and showed pressure signs with the first ten or so loads.
Everything being sent to be meloniting needs to be in the white, no bluing, no oxide finishes. Polished or bead blasted. The final melonited surface finish will look like the surface before meloniting. I polish triggers and sears to a mirror finish before meloniting. Greatly improves Savage triggers.
Nat Lambeth