FPS to BB weight ratio

Discussion in 'General Airsoft Discussion' started by Insanity at it's best, Nov 8, 2009.

  1. Insanity at it's best

    Insanity at it's best New Member

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    445 FPS = .28 or .30 for best performance yes? Shouldn't be too heavy and drop off but shouldn't be too light and curve off?
     
  2. Robin-Hood

    Robin-Hood New Member

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    Inverness
    If you search there is a chart on this forum somewhere I think CornerPedler posted back in the day. :p

    It was pretty good & showed a lot of weights/FPS.
     

  3. Insanity at it's best

    Insanity at it's best New Member

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    Thanks I'll look if I can't find it I'll ask for a URL.
     
  4. Robin-Hood

    Robin-Hood New Member

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    Inverness
  5. Insanity at it's best

    Insanity at it's best New Member

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    Thank youuuuuuuuuuuu!

    The .30 should be perfect as I'm not looking to snipe with the damn thing. Gratsi.

    Actually I'm probably go with the .36. Still keeps good FPS with it but also gets an approximate 13 more feet of range. Granted, I won't be let in to any CQB arenas with it but I prefer woods anyway.
     
    Last edited: Nov 9, 2009
  6. Robin-Hood

    Robin-Hood New Member

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    I might be missing it but I can't see the .36 with significantly longer range on that chart.
     
  7. Insanity at it's best

    Insanity at it's best New Member

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    450 FPS with .30 to .36. I was going to buy .30 but .36 at 450 FPS gets 13 more feet of range from the .30. Answered?
     
  8. Frontline

    Frontline New Member

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    Wow. Never seen that. Of course, Cornerpedler got off here shortly before I joined. Wonder where he got off to...
     
  9. jbart1981

    jbart1981 New Member

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    before looking at the range you must remebr that you lose approximatley 40 fps for every .05 gram of bb weight therefore if you are shooting at 450 fps muzzle velocity with .25 gram bb then you will be shooting at about 370 fps with .36 gram bb. which would mean you actually lose maximum range in a vacuum ( how these numbers were achieved) of about 25 feet. Now this chart does not take into account the extra accuracy or "effective range" you will get with the heavier bb or the dramatic effect hop-up can have on the flight path.

    If you are shooting 450fps with .2g bb i would guess even with hop-up off they would fly high at the tail end negating that distance increase. A heavier bb with the proper hop-up - but not too heavy will have a strighter more accurate flight and longer effective range on target.

    I would see how .3g bbs work first before moving to .36g I think depending on the length of your barrel and the effectiveness of your hop-up it could be a great sweet spot between "punch", distance and accuracy.

    I havea tight bore PDI barrel on an m4 shooting about 450fps w/ .2g bbs and have found the goldenball .32g bb with a proper amount of hop-up to be a great combination.

    Remember the heavier a bb the slower it will go but it will retain its momentum for longer - however if it starts out too slow the target might be able to "matrix" you at the tail end of your effective range therefore negating any advantage


    here is a link to a test of several brands of bbs by an independent lab if you want some in depth reading oand results on the subject - made me choose maruzens for a while - http://www.biovalbbb.eu/LevanteLabsBalisticbbTest.pdf
     
    Last edited: Nov 9, 2009
  10. r1p_c0rd

    r1p_c0rd New Member Supporting Member

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    Central, Hong Kong
    the chart is very useful, it's from my album, but credit goes to The WarStore (an old member here, no longer active) the information was compiled by him. a valuable member, shame he's moved on...
     
    Last edited: Nov 10, 2009
  11. Tacticalairninja

    Tacticalairninja New Member

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    Salt Lake City
    this was a sticky above this thread... Its cool i did the same thing
     
  12. Insanity at it's best

    Insanity at it's best New Member

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    Why do members randomly move on? Just stop going to the site after they have thousands of posts?
     
  13. Robin-Hood

    Robin-Hood New Member

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    They lose interest in airsoft, find another website, get bored, have no internet or PC, forget the site exists, die, have other more important things to worry about. Etc.
     
  14. Frontline

    Frontline New Member

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    OK, I'd seen the chart posted by the War Store, and that looked strangely familiar. Posted on the dead thread back in my younger days here. :eek: It is rather handy.
     
  15. MrsBacon

    MrsBacon New Member

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    Eastchester
    My sniper shoots 600fps with .12s what bb should i get to get it to shoot around 200-300???
     
  16. JakeBworth

    JakeBworth New Member

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    Hoboville
    I'd shoot around .38 - .43, but its different for each gun.
    This chart is not even valid anymore now that we have R-Hops and P*s