Since our barrels are hand-lapped, each barrel may break in a little differently. These vary depending on the type of steel of the barrel, bore/groove diameter, velocity and pressure of any given round, etc. Each fire and clean cycle consists of a certain number of rounds fired (one to five) followed by a cleaning procedure (see below for reference), to be completed a certain number of times (1-25).
When breaking in your new X-Caliber Barrel, you should perform appropriate fire and clean cycles to normalize the bore surface.
X-Caliber Barrel Break-In Procedure Guide Optional: Expedite Fee (Lead time of approximately 20 weeks, without added option lead times, ie Fluting, Cryogenics, or Cerakote etc. bolt is headspaced to the barrel by X-Caliber Barrel & Mfg.Ĭerakote: Adds 1-2 Weeks to order lead timeĬryogenics: Adds 2-3 weeks to order lead time We only guarantee 1 MOA or less if a Rubber City Armory, JP Ent. Some shorter barrel and gas system length combinations with will also require a 1" gas block journal length instead of the usual 1.92" to make enough room for engraving X-Caliber production stamp at the top front of the barrel. 22 Nosler barrel, and plan on having a threaded muzzle, that you select at least 5/8"x24 muzzle threads and not 1/2"x28.Īll X-Caliber AR barrels are made to a 1.92" gas block journal length EXCEPT our Lightweight & Spaghetti contours which have a 1.00" length. Our machinists and technicians put a lot into ensuring our barrels are extremely accurate, and we want them to maintain their accuracy potential for as long as possible. 22 Nosler chambering options, we have a note to the side of them shown as "(No 1/2" X 28 Thread)" because with the types of high pressures and extreme heat generated by those rounds and the concentration of both in such a small bore diameter, in some cases there isn't enough structural wall thickness at the crown with 1/2"x28 muzzle threads, and we've seen it quite often "bell out" after shooting a few rounds, noticeably reducing accuracy. On our custom AR barrel drop-down menu stipulations regarding the. NOTE: PLEASE READ FIRST BEFORE ORDERING A.
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