Author Topic: Bob remember my hollow bullet AKA wing ring!!  (Read 601 times)

oldpro

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Bob remember my hollow bullet AKA wing ring!!
« on: March 20, 2018, 01:03:51 PM »
 I so wanted to pursue this and made some attempts at it that made me question ballistics and things I never witnessed before like even at 1100 fps at 4k feet no sonic boom???? Everything else made a sonic boom up here at those speeds but not the wing ring as I called it.  What made me think of it again Bob was this add I just seen on FaceBook LOL. The last attempt was in a 30 cal I used a piece of alloy stock and drilled down threw the middle then carefully tapered it on its tail in the lathe I then used and old burst disc and put it behind the WR(wing ring) and shot it threw the chronograph it was doing a tad over 1100 fps though it weighed only 33 grains but no sonic boom and this is very un-scientific but!!! I could hear it tearing threw the tree branches way way out in the woods much further than anything I previously heard. I would love to test this with a lab Radar and see if my hunch is right and it carries momentum or energy far better than a conventional bullet. It was so time consuming to test I stopped and started working on the ART/Sikes valve at that time.

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rsterne

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Re: Bob remember my hollow bullet AKA wing ring!!
« Reply #1 on: March 20, 2018, 02:22:20 PM »
Yep, I remember it.... Might be tough to get much distance with a LabRadar because it won't have much of a radar cross-section.... did you ever try it with a couple of Chronys?....

Bob
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Alan

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Re: Bob remember my hollow bullet AKA wing ring!!
« Reply #2 on: March 20, 2018, 02:38:02 PM »
You're correct about the Labradar. A .30 caliber pellet is good to about 75 yards, perhaps further if the wind quiet and the moisture is low.
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Alan

I have an Omega compressor. If you're a fellow Guild member, and you pass through Roswell, NM, I'll fill your portable tank as a courtesy.

oldpro

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Re: Bob remember my hollow bullet AKA wing ring!!
« Reply #3 on: March 20, 2018, 03:31:54 PM »
Yep, I remember it.... Might be tough to get much distance with a LabRadar because it won't have much of a radar cross-section.... did you ever try it with a couple of Chronys?....

Bob
No I didnt Bob I got to busy doing R&D on the SS valve and then there was the time it takes to hand make each projectile......Need to cast them for more testing
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bnowlin

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Re: Bob remember my hollow bullet AKA wing ring!!
« Reply #4 on: March 20, 2018, 05:11:22 PM »
If it is a ring what pushes it?
Bobn

rsterne

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Re: Bob remember my hollow bullet AKA wing ring!!
« Reply #5 on: March 20, 2018, 08:27:43 PM »
Travis used a thin metal disc, from a burst disc I think, loaded behind it for testing.... A production version would have to have a sabot that fit inside it, I think, so that it would fall out the back after it is fired.... something that would stay in place for handling and loading, but the air would push out easily once it exited the muzzle....

Bob
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int3man

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Re: Bob remember my hollow bullet AKA wing ring!!
« Reply #6 on: March 20, 2018, 09:13:11 PM »
Travis used a thin metal disc, from a burst disc I think, loaded behind it for testing.... A production version would have to have a sabot that fit inside it, I think, so that it would fall out the back after it is fired.... something that would stay in place for handling and loading, but the air would push out easily once it exited the muzzle....

Bob
Knowing Travis and his printers I would guess that it would be a 3D printed Sabot in this case.

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