Pellets forward or backwards – does it really matter? Spin or no spin?

Forums Pellets, Projectiles, & Ammo Pellets forward or backwards – does it really matter? Spin or no spin?

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    Smitty911
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    I bumped into the above video and it shows a larger diabolo shaped pellet being fired forward and backwards out of a shotgun (smooth bore) and also a rifled shotgun barrel.  

    It appears, and would need more testing, that the spin doesn't help and forward or backwards with no spin is just doesn't matter.

    Hmmmmm, things are always more complex then what you think.

     

    Smitty

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    Coldair
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    Thanks for sharing…

    One would be really surprised because few good quality high end PCPs I shot could actually do large ragged hole groups at 50 yards shooting some select pellets backwards…

    Now everyone is gonna try to shoot their pellets backwards… start at 10 yards and go further to see how far yours can do it…

    I have a Daisy 717 pistol and can plink at tin cans at 20 yards shooting pellets backwards.

    They aren't as accurate as shooting them the correct way but interesting to find out how they do…

    I am preparing a followup to my Vendetta inquiry BTW… Still sorting out my PMs…

     

    CA

    • This reply was modified 4 days ago by Coldair.
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    Smitty911
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    Coldair

    Thanks for sharing…

    One would be really surprised because few good quality high end PCPs I shot could actually do large ragged hole groups at 50 yards shooting some select pellets backwards…

    Now everyone is gonna try to shoot their pellets backwards… start at 10 yards and go further to see how far yours can do it…

    I have a Daisy 717 pistol and can plink at tin cans at 20 yards shooting pellets backwards.

    They aren't as accurate as shooting them the correct way but interesting to find out how they do…

    I am preparing a followup to my Vendetta inquiry BTW… Still sorting out my PMs…

     

    CA

    CA,

    I'd be more interested if someone wanted to borrow my hack saw and take a couple inches off their smooth bore FX Liner 😁 Of course they would need to re-crown the end, and possible lose some slight power.  

    Who's willing to sacrifice for science?

    Smitty

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    Cranky1
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    And it would be a really good expanding hollow point.  

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    Smitty911
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    Cranky1

    And it would be a really good expanding hollow point.  

    Yes, if you watch the video the one that went backwards into the ballistic gel transferred ALL of it's energy into the gel.  It did not pass through and just fragged out.

    Smitty

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    Coldair
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    I used backwards loaded pellets to pop rats and birds in some of my guns.

    Even my Mac1 steroided 1322 carbine shot fine with backwards Crosmans.

    Seemed to drop them more effectively.

     

    CA

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    nomojo65
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     Sorry didn’t mean to post here, wrong topic, 

    • This reply was modified 4 days ago by nomojo65.
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    bubblerboy64
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    Hmmm. Interesting.  I always figured the idea was for the pellet skirt to expand into the rifling and that the rifling imparted spin which stabilized the pellet.   not so you say ?  

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    CmdCtrl
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    So now I won’t need to worry about accidentally loading a pellet backwards?!?!?

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    bubblerboy64
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    CmdCtrl

    So now I won’t need to worry about accidentally loading a pellet backwards?!?!?

    Crossed my mind as well.  

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    AirSupply
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    Careful not to snag your breach oring. 

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    Coldair
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    POI will be different with backwards pellets.

    FORGOT TO MENTION SINGLE SHOT GUNS WERE USED IN MY TESTING!!!

    With the one exception of a THEOBEN RAPID which doesn't have any BREECH O-RING!!!

     

    CA

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    USAFANG67
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    Would be interesting if the ballistics would improve if they filled the cupped/skirt end with polymer. That hole has to slow down the pellet I would think.

    • This reply was modified 4 days ago by USAFANG67.
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    Smitty911
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    USAFANG67

    Would be interesting if the ballistics would improve if they filled the cupped/skirt end with polymer. That hole has to slow down the pellet I would think.

    I don't have a CRAY computer to run any aeronautical simulations on, damn, I need a better paying job.

    We know the flow definitely isn't laminar, and there is probably some extra drag coming off the head onto the skirt.  The biggest drag would probably be as it swirls into that cavity in the back. How it all works could be interesting to play around with.

    Smitty

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    wheelie
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    I have stuck pellets in by mistake backwards so I just shot them. POI is different but they do a lot more damage to targets shooting them backwards CHEERS!.

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    bandg
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    Wadcutters are widely viewed as short range pellets.   Seems a pellet in "backwards" would behave much like a wadcutter with that flatter/less aerodynamic front section causing higher drag but the domed rear would behave more like a boattail to help reduce drag.  Coldair notes less accuracy even at close range and apparently further loss of accuracy at increased range.  Seems logical.

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    LDP
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    bubblerboy64

    Hmmm. Interesting.  I always figured the idea was for the pellet skirt to expand into the rifling and that the rifling imparted spin which stabilized the pellet.   not so you say ?  

    Diabolo pellets are drag stabilized not entirely spin stabilized like a standard shaped bullet is.

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    Dirtracer
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    I would be more worried about skirt damaging poring in barrel 

    And also not very arowdynamic

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