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SnowDragon
Servulus
chinnerz
Frankie27
Ungodlyfreak
9 posters

    Rifled barrels

    Ungodlyfreak
    Ungodlyfreak


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    Rifled barrels Empty Rifled barrels

    Post  Ungodlyfreak Wed Dec 29, 2010 5:10 am

    Does anyone know how it would be possible to put rifling in a barrel that isn't ridiculously expensive? Im toying with a few ideas, but am not quite sure how to do it. My current plan is to crimp brass tube in such a way as to act as rifling. I'm not entirely sure how to go about it though.
    Frankie27
    Frankie27
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    Post  Frankie27 Wed Dec 29, 2010 5:21 am

    It has been proven in the past the rifled barrels do not work with Nerf.
    Search around on NerfHaven, there are some lengthy arguments about it and I believe there is a tutorial on how to do it (which is quite useless)
    chinnerz
    chinnerz


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    Post  chinnerz Thu Dec 30, 2010 3:24 am

    Unless your filing was 1mm thick, it would have no effect.

    If you still want to know how, just tell me and i'll start drawing up a 'how to'
    Servulus
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    Post  Servulus Thu Dec 30, 2010 3:55 am

    I have experience in rifling barrels, never done one on a nerf gun yet. I would like to play with it a little, but the cost of rifling a barrel right now isn't feasible. There are numerous issues that will need to be worked out for such a project. All that i am sure i will be able to calculate. As for will it work... that will depend on so many other factors as well, that to say no without putting it into practice would be unscientific.

    Personally i have heard the arguments on both sides, but am yet to see to much actual hard evidence of it being done and properly tested. Therefore I wish to hold on to the hypothesis that it may work and until i have tested this my beliefs wont change easily.
    SnowDragon
    SnowDragon


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    Post  SnowDragon Thu Dec 30, 2010 4:35 am

    I toyed with this dea on the HvZ forums and the conclusion we (That is to say me and two students with engineering degrees) Said that it would have no effect, and would probably do more harm to the shot than good. There's no pressure buildup behind a nerf dart, just air pushing it. Rifling the barrel would only hurt your range.
    Psykka
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    Post  Psykka Thu Dec 30, 2010 5:56 am

    Why couldn't you have a well fitting sleeve for pressure build up then rifling in the front half of the barrel to get the spin once the dart already has velocity.


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    Silent Scope
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    Post  Silent Scope Thu Dec 30, 2010 6:19 am

    Hmm, I remember back in the good ol' days there was a particular Secret Shot 2 owned by Sandman call Ghandi. His particular mod utilised a 10'' supressor barrel with insulating foam and barrel vents, but the key to its accuracy was the the rifled pattern he made with the drilling of the barrel vents. Or so he says...


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    Ungodlyfreak
    Ungodlyfreak


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    Post  Ungodlyfreak Thu Dec 30, 2010 12:05 pm

    Hmmm. Well at the moment, i'm more focused on building the actual gun. Once i've finished that, i'm going to try experimenting with a rifled barrel. My only concern is that there's no point having a gun that shoots 200ft+ if you can't hit the broad side of a barn with it.
    If anyone knows how i could actually going about rifling a barrel, please let me know. Even if it doesn't work, i'd still like to give it a try.
    Are there any alternative ways that could make the dart spin? One thought was to make darts with fins that wrapped around the dart while it is in the breach and then pop up as it leaves the barrel, making the dart spin.
    SnowDragon
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    Post  SnowDragon Thu Dec 30, 2010 12:37 pm

    The fin idea is possible, but the extra drag on the barrel as the fins drag against the barrel on their way out would cull the dart's velocity so much you'd be lucky if it went five feet
    Dietzie
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    Post  Dietzie Thu Dec 30, 2010 3:29 pm

    Maybe (and just a maybe) cutting a shallow spiral into the dart would provide spin without excess drag.


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    Psykka
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    Post  Psykka Thu Dec 30, 2010 5:27 pm

    Ungodlyfreak wrote:Hmmm. Well at the moment, i'm more focused on building the actual gun. Once i've finished that, i'm going to try experimenting with a rifled barrel. My only concern is that there's no point having a gun that shoots 200ft+ if you can't hit the broad side of a barn with it.
    If anyone knows how i could actually going about rifling a barrel, please let me know. Even if it doesn't work, i'd still like to give it a try.
    Are there any alternative ways that could make the dart spin? One thought was to make darts with fins that wrapped around the dart while it is in the breach and then pop up as it leaves the barrel, making the dart spin.

    My 4b hits targets quite accurately over 160ft. I have many witnesses at RoF to back that up. It does require heavy darts for that but it does also tell you that rifling is not all the necessary.


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    mull
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    Post  mull Thu Dec 30, 2010 6:53 pm

    I am going to assume that this is an air gun that provides an excess burst of moving air and not a silly idea for a plunger-based gun.

    Rifling typically only works on stubby projectiles, like bullets, artillery shells and mortars.
    Nerf darts are long and inherently not aerodynamic due to their mass and where it's distributed.
    Making them spin will simply make them wobble and tumble.
    However, if your projectile is relatively stubby and has a decent mass and density, then rifling could be considered.

    Fin-stabilisation is interesting, however, one has to wonder that fits in the barrel.
    SnowDragon
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    Post  SnowDragon Thu Dec 30, 2010 7:46 pm

    mull wrote:I am going to assume that this is an air gun that provides an excess burst of moving air and not a silly idea for a plunger-based gun.

    Rifling typically only works on stubby projectiles, like bullets, artillery shells and mortars.
    Nerf darts are long and inherently not aerodynamic due to their mass and where it's distributed.
    Making them spin will simply make them wobble and tumble.
    However, if your projectile is relatively stubby and has a decent mass and density, then rifling could be considered.

    Fin-stabilisation is interesting, however, one has to wonder that fits in the barrel.

    Even if you could find something that would work, I doubt any nerf dart gets the velcoity required to allow it to work.
    Ungodlyfreak
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    Post  Ungodlyfreak Fri Dec 31, 2010 6:10 am

    Well it was just a thought. Though i may not even need rifling once it's finished. I'll see how it shoots once i have finished making it.
    The gun itself is a single shot plunger system. Though i intend on using some fairly heavy springs. Most of the compression and tension holding parts are made of steel or aluminium. My surrent issue with the gun is making a trigger system that will work to a decent degree on 1/4" stainless steel rod.
    mull
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    Post  mull Fri Dec 31, 2010 9:03 am

    I really hate being negative about people's ideas, despite being a realist, because it can destroy potential innovation that may evolve from what is assumed to be foreshadowed failures.

    Many creations are formed by the refinement of failures observed, as opposed to simply dropping an idea due to an expected prediction; or merging portions of a failed project into something else pre-existing, to further enhance it.

    Good luck with your project, as you will learn something from this.

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