It's just a fix for a factory braze fail that is fairly common apparently.
("fairly common") is fair description with me, retired machinist with no dog in this race.
My advice to you would be to fix the problem and sell the lemon to someone enamored with Remington brand.
I hope that your rifle isn't chambered in 223Rem kind of cartridge b/c you would not be able to rely on "three rings of steel" either.
Bolt protrusion being .700" dia and brass being .375" dia at head makes "third ring" as much as .162" thick.
Good luck for that ring to "expand and seal" in the case of total brass case failure.
You would be much better off with either Browning A bolt or Savage 110 that employ baffles behind the locking lugs to complete seal the raceways.
Remington 700 is below average design rifle for hunting, by no means base for target rifle.
The metal strips joining front and rear receiver rings are so thin that bench rest shooters to have good results need to "sleeve" the action.
In addition to that blueprinting it and lapping the locking lugs doesn't make sense if the bolt has .010" slop inside receiver!
To correct that bushing the bolt body to within .001" to max ,002" play is needed.
No amount of lipstick will transfer the miss piggy into the beauty queen....
For those interested I can recommend reading book "Bolt Action Rifles" by Frank de Hass, "Benchrest Actions & Triggers" by Stuart Otteson and others.
Believe it or not that's
MY story and I am sticking to it.