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Thread: First round pop

  1. #11
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    Quote Originally Posted by MegademiC View Post
    Fireman has a vid of shooting indoors you can hear it distinclty.

    There is O2 in the silencer so the powder burns inside making it louder. After the first shot, enough O2 is consumed that the subsequent shots are a bit quieter. It's noticable on my rev 9, but it's only slight, especially when running wet.

    I'm not sure if it's really louder or just a different tone.
    Is this the reason why sometimes you see some flash from a suppressor on the first round?

  2. #12
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    Quote Originally Posted by BigWaylon View Post
    And since it's one video per post, here's the second one:
    BigWaylon, thanks for the vids. I'll see if I can hear on my 10.3 this weekend. And might try with my MPX with Ti rant 45 can. Interesting.

    PB
    "Air Force / Policeman / Fireman / Man of God / Friend of mine / R.I.P. Steve Lamy"

  3. #13
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    First round pop

    Has anyone tried blowing through their can before mounting it to see if it depletes or increases the amount of frp?

    Again, BEFORE mounting it.....

  4. #14
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    Quote Originally Posted by ggammell View Post
    Is this the reason why sometimes you see some flash from a suppressor on the first round?
    That was always my thought. You can see it in my 15-22 video above. First suppressed shot definitely flashes.

  5. #15
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    When smokeless powder burns, it produces a quantity of superheated flammable gas. When it mixes hot and fast with oxygen, it ignites and rapidly burns. That's what causes muzzle flash. Flash hiders work by cooling the gasses and slowing down how fast they mix with oxygen.

    First round pop occurs when those gasses mix with oxygen in the suppressor. It takes awhile for the burnt gasses to ventilate and oxygen to seep back in, so the immediate following shots are quieter
    INSIDE PLAN OF BOX
    1. ROAD-RUNNER LIFTS GLASS OF WATER- PULLING UP MATCH
    2. MATCH SCRATCHES ON MATCH-BOX
    3. MATCH LIGHTS FUSE TO TNT
    4. BOOM!
    5. HA-HA!!

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  6. #16
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    Quote Originally Posted by steyrman13 View Post
    Has anyone tried blowing through their can before mounting it to see if it depletes or increases the amount of frp?

    Again, BEFORE mounting it.....
    Might slightly reduce it, but your breath still has significant o2.

    Purging with inert gas like n2 and sealing the end would eliminate it.

  7. #17
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    Good info guys, I appreciate it.

    PB
    "Air Force / Policeman / Fireman / Man of God / Friend of mine / R.I.P. Steve Lamy"

  8. #18
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    I've found FRP much easier to notice on rimfires cans vs centerfire. This is where "wet" rated cans can help you to eliminate FRP.

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