Announcement

Collapse
No announcement yet.

What are the differences?

Collapse
X
  • Filter
  • Time
  • Show
Clear All
new posts

  • What are the differences?

    Can anyone tell me the differences between chrome lined barrels and chrome moly barrels?
    The government can only give to you what they take from you.

  • #2
    Chrome lined barrels have...well...a chrome lining....similar to what a socket set would have on it.....very corrosion resistant.

    Chromemoly is an alloy that is throughout the metal in the barrel....very hard....very strong.....high pressure tanks.....drag car frames.....high end bikes....and barrels...are made from it....will still rust...not as quickly....should still be finished.

    IIRC.....I know it can be a PITA to get proper welding alloys....wire or filler rods.
    Live like you'll die tomorrow, learn like you'll live forever.

    Comment


    • #3
      Welding chromemoly will depend on what type it is. 4130 has to be heat treated after welding, and special fillers used. Also it has to be tig welded.

      Comment


      • #4
        Would it be worth it to get the chrome lined?

        I've heard they are less accurate.
        The government can only give to you what they take from you.

        Comment


        • #5
          Originally posted by PT945 View Post
          Welding chromemoly will depend on what type it is. 4130 has to be heat treated after welding, and special fillers used. Also it has to be tig welded.
          Cutting strips of the same material from drop pipe....I have oxy/acyt welded it before...no issues.

          The issue I have found is that most welding supply stores can order the filler....but rarely have it on the shelf.....I occasionally have them call me cause I keep a bunch of odd ball filler rod in stock.

          The heat treating is to relieve the stress the weld makes at the point of contact to the base metal...IIRC.

          It can be done with a rose bud and a IR temp gun....and time.....The roll cage was too big for the oven.

          -----------------

          If you keep your weapon clean and lubed.....chrome lined isn't necessary....IMO.
          Live like you'll die tomorrow, learn like you'll live forever.

          Comment


          • #6
            Originally posted by mikehemi View Post
            Would it be worth it to get the chrome lined?

            I've heard they are less accurate.
            You will sacrifice some accuracy, but you'll gain barrel life in exchange. In my opinion, the loss in accuracy is very minimal. Bayou Blaster says this, concerning chrome lined barrels, in another thread::::

            One other thing, chrome lined barrels are a great idea from the stand point of: prolonged barrel life, easier to clean, reducing failures to extract and feed. From the standpoint of accuracy NOT SO MUCH. It's a trade-off. No one has yet to figure out how to perfectly/consistently chrome line a barrel to an exacting thickness throughout it's length. Thats why some die-hard target shooters still prefer non-chromed 4140 chromoly or stainless barrels. I would also try different brands and weights of cartridges to find out what your particular firearm likes.

            Thread link:
            http://www.survivalmagazine.org/surv...5776#post35776
            Last edited by slowz1k; 05-12-2011, 08:43 AM.
            The 12ga.... It's not just for rabbits anymore.

            Comment


            • #7
              Besides Slowz1k's comments:

              Would it be worth it to get a chrome-lined barrel? If purchasing your AR-15 or Semi-Auto M-4 configured AR-15 with intentions of utilizing it for survival and prepardness applications, I would strongly recommend getting a Chrome-lined barrel. They tend to function better when you run the firearm hardcore and tend to function more reliably over time and as barrel temp rises. The accuracy difference with carbine variants is negligible.

              I would also recommend ensuring that the barrel is chambered in 5.56 x 45mm, that way it will except both the civilian .223 rem and the 5.56 x 45mm NATO ammo. Additionally if you are purchasing an assembled firearm or upper reciever, I would also ensure that the barrel adapter and reciever have the M-4 type feed ramps. Facilitates feeding.

              Lastly the tighter the twist rate the heavier bullet it can sling accurately. Most M-4/carbine length barrels are currently served up in the 1/7 or 1/9 twist rate. The military currently utilizes 1/7 twist rate. One must keep in mind that the .223 rem/5.56 x 45 NATO was optimized to be fired from a longer barrel than the 16 inch carbine and shorter SBRs.

              Chrome Moly steel includes chromium and molybdenum, and as a result these materials have an excellent strength to weight ratio, and are considered stronger and harder than standard 1020 steel. These grades of steel do contain chromium but it's not enough to provide the corrosion resistance afforded by chrome-lined barrels. Good luck with your purchase. BB.
              Last edited by Bayou Blaster; 05-12-2011, 11:44 AM. Reason: Typo/additional info

              Comment


              • #8
                Thanks the information is really helping out guys. I have almost decided.
                The government can only give to you what they take from you.

                Comment


                • #9
                  Random Buggy bump!!!!!!

                  -Buggy
                  It has yet to be proven that intelligence has any survival value.
                  -Arthur C. Clarke

                  Comment

                  Working...
                  X