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Question What distance will the pellet travel?

Discussion in 'Anything Airgun Related' started by Harwich Shooter, Mar 4, 2014.

  1. Harwich Shooter

    Harwich Shooter Donator

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    Just thinking out loud really. Firstly Chairgun does my head in :) Any tips and guidance welcome.

    My question is:- How far will a Bisley Magnum .177 10.5gr pellet travel when fired at 11.2ft lbs muzzle velocity with the barrel tilted up at a 45 degree angle to the horizontal?

    Thanks in advance.
     
  2. troy tempest

    troy tempest Well-Known Member

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    well if people can hit a target at 100yds i would think you could maybe add another 50yds to that so i'll say 150yds
     
  3. Trampilot

    Trampilot Keyboard Hero

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    I don't know about the answer but I was told a theory recently which I'd love to find out.

    If you fire a rifle (or indeed any projectile - lets say a .22 Eley Wasp for arguments sake) exactly parallel to a level ground and from the same height drop the Eley Wasp to the ground, the pellet fired and the pellet dropped should hit the ground at the same time.

    I'd love to find out if this was true and see it demonstrated.
     
  4. Kenbarcon

    Kenbarcon Donator

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    Can't see that being true, pellet from sky has to build up momentum and will fall at approx 120mph, where as pellet from gun is launched at a much greater force.
     
  5. Tmaxxjj

    Tmaxxjj Busy Member

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    It's true :).
    Both pellets (or bullets) only have gravity acting upon them, ie there's no lift being generated.
    Here's the Mythbusters guys proving it :)

    http://youtu.be/D9wQVIEdKh8
     
  6. Tmaxxjj

    Tmaxxjj Busy Member

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    Yes, launched horizontally with force. But they both fall and accelerate towards the ground at the same rate
     
  7. Dsmith

    Dsmith Engaging Member

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    Too much maths. Cant compute. System overload. Lol
     
  8. Alexdermietzel

    Alexdermietzel Keyboard Hero

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    I figured it out once. I think for a 11.5ftlb 8.4 grain jsb exact; 23 degrees is needed for max range.
     
  9. oliver13

    oliver13 Donator

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    I've heard 400M mentioned as the maximum for pellet travel, but you need the barrel to be at something less than 45 degrees - sorry, no idea of the parameters like caliber & power.
    I know for purposes of planning permission shooting grounds work to 300M for shotgun shot to carry, I believe it was Eley who fired a load of cartridges along a canal at the back of the factory to work it out in practise rather than by theory.

    The dropped pellet versus fired pellet theory is true in theory in a vacuum, but there may be a smidgin of lift for the fired pellet due to the rotation caused by the rifling so it would be in the air a bit longer, but I've no idea how much longer.
     
  10. kermitboy1

    kermitboy1 Banned

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    That's great, amazing, KB1
     
  11. Harwich Shooter

    Harwich Shooter Donator

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    I ask because I have a lovely hawthorn sitty tree and about 500 metres behind it is a road. I just want to be sure that my pellet will not reach the road. Lets say 530 metres in total from where I hide and shoot to the road.
     
  12. DUNKS

    DUNKS Big Poster

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    I think you should be safe. Especially at 45deg. I think 23 deg is for max range.
     
  13. Awesime

    Awesime Donator

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    170 yards max for sub 12ft/lb, or so the Germans said they had worked it out to in the World FT Champs.
     
  14. Harwich Shooter

    Harwich Shooter Donator

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    Thanks NJR. Much appreciated. Yes, the angle could be more like 30deg DUNKS. Its not a high tree. Just one that they like to sit in. :)
     
  15. simonc_here

    simonc_here Engaging Member

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    Chairgun:
    with
    JSB's 8.44 fired at 786 will go 392 yards @ 23 degrees
    Bisley mags 10.5 fired at 692 will go 423 yards @ 25 degrees
     
  16. oliver13

    oliver13 Donator

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    Whereas the by the Grace of . British, Cubleycat, can shoot cans at 200M with her 12ftlb HW100, with enough energy left to put a hole in them...

    http://www.youtube.com/watch?v=WMCiMk6w_wU
     
  17. Dag

    Dag Pro Poster

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    Given the pellet, elevation and rifle power you will find Chairgun gives you a maximum range of 387.3yds and a max height of 598ft at 263 yds
    Dag

    Just noticed you may be shooting at 30degrees in which case you will push the maximum distance out to 424yds, FYI the max height would also change to 369ft at 288 yds.
    Dag
     
    Last edited: Mar 4, 2014
  18. Awesime

    Awesime Donator

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    Can only speak from experience, see the photos from the 2013 World fT champs in Germany. We had two zero ranges facing each other. Quite daunting when you fist sat down and saw the other shooters through the scope.
    However, the German assured us they had tested with a variety of guns to 12 ft/lbs and various weight pellets, and 170 yards was furthest a pellet could travel.

    I believe the two lines were 300 yards apart. No one was shot from the other end!!
     
  19. Alex.mc

    Alex.mc Busy Member

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    Last time I went through all this, my .177 X2 would be chucking pellets between 350 and 400 yards depending on pellet.

    My permission has some new lakes in it after all the rain. I mucked about lobbing pellets into them from 150-175 yards away for interests sake. It took a LOT of holdover, the longer one was almost off the bottom of the scope view at 10x. And the small drift of wind shifted the POI quite a bit to one side even though it was a just a couple of MPH.
    Quite informative in an odd way?
     
  20. Dag

    Dag Pro Poster

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    That's interesting! Using Harwich Shooters example the pellet would hit the ground at approx 120yds if fired horizontally....in keeping with what you say.
    Dag
     

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