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Thread: Ruger SR556 on Full-Auto: Slow Motion Vids

  1. #11
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    Quote Originally Posted by Tokarev View Post
    One of these days I need to get some footage of the Ruger on full-auto at normal speed just to give you guys an idea of the upper's cyclic rate.
    That would be cool of course... but the buffer system in the lower can make a big difference in cyclic rate. I can get my 14.5 middy to run about like a BAR with the A5 buffer.
    "You people have too much time on your hands." - scottryan

  2. #12
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    Cool videos

  3. #13
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    Quote Originally Posted by markm View Post
    That would be cool of course... but the buffer system in the lower can make a big difference in cyclic rate. I can get my 14.5 middy to run about like a BAR with the A5 buffer.
    True enough.

    I don't know if anybody's really flogged a Ruger to see what combo works best on an F/A lower but I have had some timing issues with the gun on standard gas setting (#2) and a standard carbine buffer. No issues at all on the #2 setting with an H2 buffer. I need to try an H3 and see what that does to the cyclic rate. I also need to try some hotter ammo, like XM193, on setting #1 and see how that runs.

  4. #14
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    Quote Originally Posted by RubberDucky View Post
    Cool videos
    Thanks. I think I had as much fun behind the camera as Nick did behind the trigger.

  5. #15
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    Here's the new Ruger SR556E upper on the Colt lower with my full-auto bolt carrier in place.

    This is with an H3 buffer and the gas setting on the wide open (#3) setting. We tried a few rounds on the #2 setting but couldn't get the bolt to lock back on an empty mag. The gun short strokes on setting #1 (lowest gas setting) with the H3 buffer in place.

    As you can see, the cyclic rate is pretty high. I'm hoping an H2 buffer will allow the gun to work properly on setting #2 and help lower the cyclic rate.

    http://www.youtube.com/watch?v=X0OhrvQuBy8

  6. #16
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    What camera are you using?

    I'd like to try this with my 14.5" MRP.

  7. #17
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    Quote Originally Posted by QuietShootr View Post
    What camera are you using?

    I'd like to try this with my 14.5" MRP.

    More info on the camera:

    http://panasonic.net/avc/lumix/compact/fz100/index.html

  8. #18
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    I'll take both uppers out today (SR556C and SR556E) and see what I can do.

  9. #19
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    Here's the SR556E upper with the H3 buffere in place. Gas is set on the #2 setting.o

    Here's the SR556E upper with the H3 buffer in place. Gas setting is on #2. Note that the cyclic rate is more reasonable but the gun doesn't have enough oomph to lock the bolt open on an empty mag.

    Partail mag on full-auto:
    http://www.youtube.com/watch?v=yksVWX8eO58

  10. #20
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    We ran the SR556E upper this morning with a standard weight and an H2 buffer in the lower. The gun runs fine on the lowest gas setting on semi- but would not run reliably on any gas setting with the light buffer in place. Next, we tried the gun with an H2 buffer and got good results.

    Here's the gun on the lowest gas setting with the H2 buffer:
    http://www.youtube.com/watch?v=_nz4SpF1yVE

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