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New sling bullet designs (Read 850 times)
Blindsquirrel
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New sling bullet designs
Dec 14th, 2022 at 9:57am
 
Good day to all, I thought I would share a project Iím working on. Iíve got several different clay models in the oven drying so I can mold them in silicone to be able to cast them in the anchoring cement. Here r a couple of pictures of one of the smaller ones. I call them fluted biconicals, or rifled sling bullets. The idea came from a video I watch where an archer was shooting fletchless arrows that had wind grooves carved into the shaft where the fletching should have been, and low and behold the dang arrows spiraled just like it had fletching. And the mass removed from the tail end should make the projectile more weight forward and hopefully will help it fly kind of like a lawn dart. Once I have some cast up Iíll post up some performance videos and c if I can get some good footage of them in flight.
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« Last Edit: Feb 16th, 2023 at 1:45pm by Rat Man »  

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timpa
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Re: New sling bullet designs
Reply #1 - Dec 14th, 2022 at 3:20pm
 
New innovations are always interesting.
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Archaic Arms
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Re: New sling bullet designs
Reply #2 - Dec 14th, 2022 at 4:02pm
 
I experimented with these a few years ago. Didn't really find a benefit other than that air resistance may help them stay spin stable, which is potentially useful if using very long-aspect ratio projectiles.
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Blindsquirrel
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Re: New sling bullet designs
Reply #3 - Dec 14th, 2022 at 5:31pm
 
Unlike urís Iíve tried to have a weight bias to one end of the projectile, that way it should behave like a small lawn dart and want to fly in more a natural arc with out tumbling. Which also helps with projectile stability. And Iíve found from spinning different shaped rocks and the ammo Iíve cast,  that some of these shapes want to spin like a top and self right. And then there r some that something is not right on the centerline of the spin and it behaves erratic, toppling over on to there side in just a few revolutions.. This I have done spinning them on my counter top. Its interesting u should have a go at it. Iíll do a video and post it back here to show what Iím talking about. Do u remember the toy top that has the dowel rod on the one end and the ball on the other, u spin it on the ball and it stands up on the dowel and spins like that till the friction becomes to great and it slows and falls over. This may b an effect that could b used to an advantage to deliver the glande with a known point first just by getting it into a spin that makes it self orient to a known end.🤔
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joe_meadmaker
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Re: New sling bullet designs
Reply #4 - Dec 15th, 2022 at 2:47pm
 
The concern I have with this is that the grooves (or fins or whatever) that are carved into stone will need create enough lift (drag) to change the stone's direction and spin which was applied by the sling.† Unless of course if the throw from the sling (meaning the projectile orientation and spin) was perfectly aligned with the grooves carved into it.† Because stones are much smaller and denser than an arrow, a lot of air will need to be caught to adjust the stone's flight.† I don't think there would be much effect unless whatever it is that's catching the air is very substantial.

Just my thoughts.† I certainly don't know.† It will be interesting to see a test.
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Blindsquirrel
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Re: New sling bullet designs
Reply #5 - Dec 15th, 2022 at 4:14pm
 
Here r some pics of how they set in the pouch. When I place my projectile in my sling the point of the projectile points to the right, this always gives a rifled spin to my shots. These r designed to let the sling put all of the spin into them and there shape and direction of spirals grooved into them goes with the spin so there should little to no air resistance at the back end. Iíve got one curing in silicone right now and will b casting some Quickcrete tomorrow and doing some testing with them this weekend. I do think that the shape and how the mass is distributed will b very important and have a drastic effect on performance.. The one Iím molding now spins like a top, even with a bad spin put on it. I have a couple of others that want to lay down and spin on their side. It made me think of the spinning top toy I was talking about earlier, that stands up on the dowel u use to spin it with. Iíll have some video of them in flight hopefully by this weekend or the beginning of next week. Hopefully with out standing results.
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Blindsquirrel
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Re: New sling bullet designs
Reply #6 - Dec 16th, 2022 at 6:37pm
 
Here is one of the new bullets in flight at super slo mo, with it exploding against my 4x4 board.
https://youtube.com/shorts/BKt-Im4o9lc?feature=share
They show promise in flight, they were easy to get on line(or close to the line I was aiming for the orange ring). I shattered the others before I could get video but there r more in the works. As well as Iím researching a denser and heavier reinforced concrete mix that should still give a smooth finish like that of the rockite and quikrete. Which I like cause it does eat into ur slings pouch like some stones do. Enjoy
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Blindsquirrel
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Re: New sling bullet designs
Reply #7 - Dec 20th, 2022 at 9:28am
 
Here r some of the glande designs Iím playing around with, to c what does what. The 3 in the lower left still need to b molded in silicone, but I think the torpedo looking one in the middle of the 3 is going to perform the best. The one with the mold all by itself to the left, is the one that I shot in the video up above. The twisted shaped ones r a novel way to remove some of the mass in the tailend, and c if it helps with anything? If anyone is interested in any of the silicone molds just let me know.
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SmokinRocks936
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Re: New sling bullet designs
Reply #8 - Jan 13th, 2023 at 4:10pm
 
This is fascinating and exceptional! Have you done any long shots?
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Blindsquirrel
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Re: New sling bullet designs
Reply #9 - Jan 16th, 2023 at 9:55am
 
Not yet, that is in the Q for things to do in the upcoming weeks.
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Blindsquirrel
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Re: New sling bullet designs
Reply #10 - Jan 25th, 2023 at 3:48pm
 
Here is a hollow point bullet Iím getting ready for silicone. Then going to make up some quikrete slugs to try out. Hoping it will have a similar effect as hitting someone with a cupped hand. As in the big cup in the end should trap some air upon impact for a nice pop!
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Rat Man
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Re: New sling bullet designs
Reply #11 - Jan 31st, 2023 at 8:06am
 
Very interesting.  Good job.
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Blindsquirrel
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Re: New sling bullet designs
Reply #12 - Feb 11th, 2023 at 8:08am
 
I should b done editing the video with the different bullet shapes and how they fly today and will post the link here later for all to enjoy.in the mean time here is a link to enjoy.
https://youtube.com/shorts/GtO-msPq4NM?feature=share
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Blindsquirrel
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Re: New sling bullet designs
Reply #13 - Feb 12th, 2023 at 1:27pm
 
Good day to all. Just finished with the video of the  different shaped projectiles im testing out to see what works the best and is the easiest to make. Hope yíall enjoy and if you have any thoughts please let me know. That is the only way we will ever rediscover the knowledge that has been lost through time and to people who think they should be the only ones with that info.
Hereís the link: https://youtu.be/bVDu9XlN1LI
Have a great one and enjoy
Ps let me know how I can improve the experience for u the viewer. Thanks and have a good one.
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Blindsquirrel
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Re: New sling bullet designs
Reply #14 - Feb 15th, 2023 at 3:11pm
 
I came up with this idea to combat the off center of mass my hand made bullets probably have, it is a molding of the pointed end of a plumbbob cemented together to form a biconical projectile. Iíll b doing testing in the up coming days and will post back.
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