Unconfigured Ad Widget

Collapse

308 muzzle break

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • #16
    hermosabeach
    I need a LIFE!!
    • Feb 2009
    • 19425

    You need to determine the balance you want between recoil reduction and how loud you can tolerate...

    For the money, the Miculik are awesome...

    SJC Titan has scored well in all recoil tests and is about $110

    here are some bigger ones being tested

    Rule 1- ALL GUNS ARE ALWAYS LOADED

    Rule 2 -NEVER LET THE MUZZLE COVER ANYTHING YOU ARE NOT PREPARED TO DESTROY (including your hands and legs)

    Rule 3 -KEEP YOUR FINGER OFF THE TRIGGER UNTIL YOUR SIGHTS ARE ON THE TARGET

    Rule 4 -BE SURE OF YOUR TARGET AND WHAT IS BEYOND IT
    (thanks to Jeff Cooper)

    Comment

    • #17
      hermosabeach
      I need a LIFE!!
      • Feb 2009
      • 19425

      here are 35 brakes being tested - 5.56




      Rule 1- ALL GUNS ARE ALWAYS LOADED

      Rule 2 -NEVER LET THE MUZZLE COVER ANYTHING YOU ARE NOT PREPARED TO DESTROY (including your hands and legs)

      Rule 3 -KEEP YOUR FINGER OFF THE TRIGGER UNTIL YOUR SIGHTS ARE ON THE TARGET

      Rule 4 -BE SURE OF YOUR TARGET AND WHAT IS BEYOND IT
      (thanks to Jeff Cooper)

      Comment

      • #18
        Guardian Mode
        Member
        • Oct 2013
        • 412

        As mentioned above, $54 for a Surefire Procomp.
        There's also a PWS FSC30 off a Scar for $58.
        Those are the 2 best for cheap.

        Comment

        • #19
          JMP
          Internet Warrior
          CGN Contributor - Lifetime
          • Feb 2012
          • 17056

          Originally posted by MongooseV8
          Ross Schuler brake. $45 shipped. Can't beat them at twice the price.
          Originally posted by LynnJr
          Harrell's Precision muzzle brakes. They work they are built right and no hype. There prices include shipping.
          If your after the best at reducing recoil the clamshell brakes are the best.
          Those are good options, but they will tend to be what you want when you are getting a brake professionally installed, or at least by someone with knowledge and tools for timing. It sounds like the OP has a pre-thread and wants the cheapest DIY clamp or shim type.

          Unless you are very weak, a 308 just needs a tiny amount of taming to keep your muzzle from jumping. I caution folks that get a brake that is TOO efficient on a short barrelled 308 like the OPs. It can be a bit of a nuisance.

          I have a braked AR-10 with a shorter barrel, and that brake makes me not want to shoot the gun. It may sound counter intuitive to want to AVOID efficiency, but one may choose to do this on short barrels if there isn't too much lift. If you have a nice 30"+ barrel, then by all means, brake the **** out of it because you won't be in the shockwave, but everyone else will.

          Comment

          • #20
            MongooseV8
            Veteran Member
            • Apr 2010
            • 4426

            Originally posted by JMP
            Those are good options, but they will tend to be what you want when you are getting a brake professionally installed, or at least by someone with knowledge and tools for timing. It sounds like the OP has a pre-thread and wants the cheapest DIY clamp or shim type.
            Thats what jam nuts, shims, and crush washers are for

            Comment

            • #21
              MongooseV8
              Veteran Member
              • Apr 2010
              • 4426

              I use all three at once for best results.

              Comment

              • #22
                bubbala
                Senior Member
                • Mar 2012
                • 904

                i've got the M-11 precision armament on a 308 and i gotta believe it's near the top in that caliber as well. ++ for crush washers too.
                NRA Range Safety Officer pistol and reloading instructor

                https://www.facebook.com/pages/HL-Se...=photos_stream

                Comment

                • #23
                  JMP
                  Internet Warrior
                  CGN Contributor - Lifetime
                  • Feb 2012
                  • 17056

                  Originally posted by MongooseV8
                  Thats what jam nuts, shims, and crush washers are for
                  ewwwwww

                  Comment

                  • #24
                    brando
                    Veteran Member
                    • Feb 2006
                    • 3694

                    Don't break your brake!
                    --Brando

                    Comment

                    • #25
                      LynnJr
                      Calguns Addict
                      • Jan 2013
                      • 7958

                      The brakes from Harrell's are all threaded and ready to go or you can get a large one and blend it to your barrel.
                      Most importantly the holes are all symmetrical symetrical.
                      I don't shoot brakes that have holes that are not counterbalanced out.
                      Lynn Dragoman, Jr.
                      Southwest Regional Director
                      Unlimited Range Shooters Association (URSA)
                      www.unlimitedrange.org
                      Not a commercial business.
                      URSA - Competition starts at 2000 yards!

                      Comment

                      • #26
                        MongooseV8
                        Veteran Member
                        • Apr 2010
                        • 4426

                        Originally posted by JMP
                        ewwwwww
                        Lol I know right

                        Comment

                        • #27
                          F4E Phantom
                          Member
                          • Jan 2006
                          • 320

                          Are brakes with one or two large chambers(AAC/AI/R&D type) going to be less effective as far as reducing recoil. I want to keep the brake short .

                          Comment

                          • #28
                            brando
                            Veteran Member
                            • Feb 2006
                            • 3694

                            It's a bit more complicated than just "more chambers means more recoil mitigation", but generally that's true. However, with short action rifles I personally don't think the difference is all that noticeable. I run a large single chamber brake on my .308 and 6.5 barrels but 2 and 3 chamber brakes on my .338LM and .338LM Improved (respectively) barrels.

                            The amount of actual recoil mitigation has more to do with the volume and pressure of gas being redirected.
                            --Brando

                            Comment

                            • #29
                              ScottsBad
                              Progressives Suck!
                              CGN Contributor - Lifetime
                              • May 2009
                              • 5610

                              Here is the article from The Truth About Guns. This is a 5.56 muzzle device test and article, but many of these devices have 7.62 analogs.



                              My SCAR 17s have PWS brakes, and they are excellent, except the blast to the sides and behind the shooter will blow the hair back of any observers.
                              Last edited by ScottsBad; 06-02-2015, 2:17 PM.
                              sigpicC'mon man, shouldn't we ban Democracks from Cal-Guns? Or at least send them to re-education camps.

                              Comment

                              • #30
                                brando
                                Veteran Member
                                • Feb 2006
                                • 3694

                                The concept behind a muzzle brake is taking some of that high pressure, high velocity gas leaving the muzzle, and diverting it back at roughly a 45 degree angle towards the shooter. This essentially provides thrust that counteracts the recoil impulse by pulling the rifle forward. So you're basically taking a force vector from inital recoil and adding an inverse force vector from the brake and the difference in magnitude (minus rifle weight) becomes the felt recoil. The amount of thrust you get from a brake will depend on the pressure and volume of gas at the muzzle and how its diverted. So there will be significantly more thrust from a .50BMG than a .300WM because the volume of gas is significantly more, even though the muzzle pressure is similar. And this is also why brakes on .223 and .308s tend not to be as effective - there's just not enough volume being diverted.

                                Most of the brakes I have these days are designed to run with suppressors, so they have large chambers or ports and direct the gas laterally. That's why on their own, they aren't as good at mitigating recoil as a brake that has ports angling the gas back towards the shooter.

                                As the gas expands past the muzzle, not all of the gas will be diverted through the ports as it expands mostly in the path of least resistance which will be straight out of the front of the brake. If the ports are large, more of the gas can be diverted through them, however the larger they are, the more the pressure and resulting velocity drops, so there is less thrust. If you took the volume of those single large ports and instead divided them into two smaller ports on each side with the same combined volume, the gas being diverted will be doing so at higher pressure, giving the brake more thrust. This is why multiple ports tends to show an improvement in brake performance, though again, this is less noticeable with short action rifles and more obvious with big bore rifles.


                                Source: I have a physics background and do computational fluid dynamics for a living (at least for one more week).
                                --Brando

                                Comment

                                Working...
                                UA-8071174-1