Some of the guys are being too harsh on your barreled action LE.
Since it locks up on the front of the bolt, I can't see where anything done on it has weakened it, or made it dangerous to fire.
Headspace is not a big issue with the Lee Enfield, because if it has too much head space, you just have to get another little bolt head, one number bigger.
I must be have got up on the proper side of the bed this morning, otherwise, I wouldn't be about to give away a secret, regarding head space on a Lee Enfield.
If you are a handloader, take a resized case and start a new primer in it, but leave a considerable amount of primer protruding.
Drop the sized case, with the protruding primer, into the chamber.
Close and lock the bolt.
Remove the cartridge case.
The amount the primer now protrudes from the face of the case, will be how much headspace the rifle has.