Do All Rifles Need Break In

mysticplayer said:
As I said, any issues with the orig throat from chambering are now 1 to 2" downstream :)
Click to expand...

Jerry, didn't catch that at first! So you don't buy the hardening theory because you figure that if the throat gets eroded, then why not everything else the bullet slides past, chamber reaming ridge included.

I see what you mean, but I think the debate continues... Is it such a stretch for someone (I'm thinking the "Box O' Truth" people) to debunk this once and for all? I don't think MythBusters would take on something so obscure to the general public :D
 
The only methods I know of that actually toughen the bore are chrome plate or Stellite. Other then that, I can't see how any liquid or coating will help.

Maybe a bit, ala moly and other friction reducers but ultimately, that flame front is burning off steel. Anything that was on the surface of that steel is also happily heading out the muzzle.

All I know is accurate barrel life is already short enough (much shorter then many promote as well) without having to add more wear and tear. Especially, as the first 500rds are the most accurate that bore will ever shoot.

Jerry
 
Work hardening typically occurs when there is permanent deformation of the steel. The stresses in barrels are designed to be below the point of permanent deformation.

BTW => permanent deformation = bulged barrel or worse.
 
YES the AR requires the following break-in proceedure...

1 round to see if the bolt stays open.

2 rounds to see if the gun cycles.

Shoot the sno* out of it (if you can afford to feed it that much that day).

Take it home and clean it.
 
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