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  1. J

    Shooting the 50 BMG

    Thank you. I have shot everything from the Argentine ammo to the 750 grain Hornady and did not have any problems. When I started working on a design I knew that on a recoil operated rifle if I reduced the recoil to much It would be very finicky. With that said I then calculated the port...
  2. J

    Shooting the 50 BMG

    Looks can be deceiving. We tried shooting the Barret with remote firing and It did a back flip and I had to catch it. With my brake it moved straight back and only about 8''. The big plus was the sound and pressure wave. we were able to shoot it very comfortably with ear plugs only and the...
  3. J

    Shooting the 50 BMG

    Here is a video of a new muzzle brake that tames the beast. It compares the Barrett brake to the new progressive brake design. Barrett M82A1 50 Cal - YouTube J E CUSTOM
  4. J

    Muzzle brake test for AR 10 and AR15

    I thought you guys would be interested is this video because we did a lot of test using the AR 10 and AR 15. Video shows lots of recoil reduction and better muzzle control for the AR platform making for fast follow up shots. J E CUSTOM Muzzle Brake Testing - YouTube
  5. J

    Gunsmithing Muzzle brake test

    The time was 7;30 or later CST some test were at the limit of the camera equiptment. Down hear it is to hot to shoot before about 6;00 and we held off on the flash test until later. I will look to see where that time showed up and correct it. The first Test on the 50 BMG were earlier in the...
  6. J

    Gunsmithing Muzzle brake test

    A while back I built a muzzle brake for the 50 BMG because the brakes available were not pleasant to shoot. This test show some of that first test and the follow up test on the same design but in smaller calibers. This brake has progressive ports and turning vanes to re-direct the shock-wave...
  7. J

    Gunsmithing Anyway to fix a F'd up chambering job??

    There could be several other problems . First = the reamer cuts the neck length and if the reamer manufacture cut it to short the smith cant change it without out a proper SAMMI reamer. You might try Trimming the brass .020 shorter on a few cases and try it. (The brass could be to long for the...
  8. J

    Gunsmithing Muzzle Brake Concentricity

    In my opinion it is very important that the muzzle brake be concentric with the bore, both the inside and outside. The bullet exits the brake before it can have any real effect on it unless it strikes the brake and then it destroys accuracy and can be dangerous. I have seen brakes that were...
  9. J

    Gunsmithing Options for cutting down fluted barrel?

    If the barrel has any shank, you can take a little off both ends and as long as you leave the ends of the flutes alone and leave 1/4 to 1/2 '' on each end you can shorten by 2 or 3 inches without it looking bad. You can cut a new chamber and be good to go. J E CUSTOM
  10. J

    Gunsmithing Question about gain twist rifling.

    I am no expert by any means but I have done extensive research in to Gain Twist , and there uses. Starting with no twist and going to a fast twist just doesn't work because the engraving of the bullet has to much change from zero to a fast twist to be accurate. It is normally only one or...
  11. J

    New member from Texas

    I have been interested in this site for quite a while and thought it was time to join in on some of the threads that I have some experience in and other areas that I can learn something new. I have been a competitor in many different type of competitions for most of my life and hunted for...
  12. J

    Gunsmithing Loose barrel threads

    In my opinion, Setting it back and re-threading it would be the best and would eliminate second guessing if it did not shoot well. J E CUSTOM
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