Rod,
As for firelapping, I wouldn't do it until after you break the barrel in. It may not need it. Since you have access to a beadblaster, that makes a good finish for a barrel also, plus it takes cold bluing better. Brownells sells an excellent cold blue, (I can't think what it's called) . Make sure you plug the barrel before beadblasting. Good luck with your project. One tip on cold bluing if you have a way of heating the barreled action it will take the bluing better.

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