March 09, 2017, 06:55 PM
AnushBroached P224/P229C barrel ?
I just purchased a P224/P229C 357Sig barrel in recent factory packaging advertised as "broached" marked: BARREL, 224, 357, DLC. It was medium gray in color, shiney, & appeared to be uncoated. After cleaning it with Slip 2000 EWL it turned dark gray. Inside the tip of the barrel & inside the first 1/8 inch of the chamber were rainbow's. Was this a barrel ready for Nitride but never made it?
March 09, 2017, 07:09 PM
jsawyer09I was always under the impression that a broach is just a cutting tool used to cut steel (in most cases I know of, and to the purposes of which we're talking, to cut the rifling of a bore, though it could be used externally, too). I didn't think it would affect how they 'coat' their barrels. I do, however, have P228/P229 barrels that are either phosphate or nitride; the phosphate giving it the appearance you're describing, though I don't think Sig does that for recent production barrels. I guess I'm at a loss.
March 09, 2017, 07:29 PM
AnushIt is neither phosphate or nitride, appears to be uncoated
March 09, 2017, 07:32 PM
jsawyer09Very odd. I'd think they'd have to treat it in some way or coat it with something. You wouldn't happen to have pics?
March 11, 2017, 07:54 PM
ACClauhsDLC stands for diamond like carbon. Sounds like the color may just be "off" compare to normal Sig coloring.
http://www.jabuie.com/ionbond.html