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Fishing sinkers as ammo

Post about things you have launched or thought about launching. Also post about various materials used for building cannons. No posts about explosive projectiles!
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Unread postAuthor: john bunsenburner » Wed Jun 03, 2009 1:35 pm

well yea, 4th base=homeplate...

We are getting way off topic, so MOVING ON!
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Unread postAuthor: jmeyer1022 » Wed Jun 03, 2009 1:37 pm

Completely off topic, awesome post Jeep had me in tears.
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Unread postAuthor: john bunsenburner » Wed Jun 03, 2009 1:42 pm

Yea i have to ditto that!
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"Did you ever stop to think that out of the seven deadly sins envy is the only one which doesn't give the sinner even momentary pleasure"-George Will
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Unread postAuthor: USGF » Wed Jun 03, 2009 3:07 pm

jeepkahn wrote: snip

4th base??? How many bases are there before you reach home plate???

When you're old and married, you're lifes mission will be to not fall asleep in the dugout...While waiting to get your chance to bat... :shock:


Jeep, Sadly, all too true.... :o

USGF
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Unread postAuthor: jagerbond » Wed Jun 03, 2009 3:27 pm

dewey-1 wrote:
USGF wrote:
jackssmirkingrevenge wrote:In the interest of stability and preventing gas blowby, it would be a good idea to drill out the base and plug the hole.


Maybe use these weights with plastic sabots. :)

USGF


Do I sense a new sabot/ammo design?

Conical Array Sabot (CAS]

I will post a drawing. This is the 1.5" version.
The same array patten could be used for 1.7" and 2" version.

You could use just one "bullet" at a time to reduce shotgun pattern.

edit for: clarification


Image


Dewey,
Nice drawings! Can you give us the "massprop" on the lead portions so we can determine weight. I'd like to be shooting 100-110 gram lead rounds.
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Mike
Sureshot Inc. / http://www.ultimatespudgun.com
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Unread postAuthor: dewey-1 » Wed Jun 03, 2009 4:44 pm

Jagerbond;

I will do one better and send the CAS-Concept file to USGF.

Then you may do what ever with it. Hope you you don't mind. :D
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Unread postAuthor: jimmy101 » Wed Jun 03, 2009 4:54 pm

What's the point of these shells? Might as well use round lead balls.

These are going to tumble like crazy unless you fire them from a rifled barrel. That nice point won't do anything since it won't be pointing in the right direction 99% of the time in flight. For 50% of the time they'll be flying sideways and might as well be cubed shaped.

To get them to be areodynamiclly stable you'll have to drill out the base a lot. Probably need to drill out nearly the entire length of the shell at something like 75% the outside diameter to get the center of drag far enough behind the center of mass. (The piddly little string hole won't make much difference.)
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Unread postAuthor: suburban spudgunner » Wed Jun 03, 2009 4:56 pm

I would suggest threading a cloth tail through the hole (placing the center of drag behind the center of gravity) and firing at high pressures to stabilize them.

I've got a bunch of these at home; I'll make a video if you guys want.
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Unread postAuthor: MountainousDew » Wed Jun 03, 2009 5:29 pm

I would like a video, if you wouldn't mind...

Also I just found these:
I have no idea if these are any better than the others, but they come in many shapes, sizes, and weights!

OMG, more almost invisible text... Did you find the other?
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Last edited by MountainousDew on Wed Jun 03, 2009 5:41 pm, edited 1 time in total.
<a href="http://s709.photobucket.com/albums/ww95/JKazkid/?action=view&current=MDSig.jpg" target="_blank"><img src="http://i709.photobucket.com/albums/ww95/JKazkid/MDSig.jpg" border="0" alt="Photobucket"></a>
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Unread postAuthor: MountainousDew » Wed Jun 03, 2009 5:30 pm

Sorry, double post...
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Last edited by MountainousDew on Wed Jun 03, 2009 5:42 pm, edited 1 time in total.
<a href="http://s709.photobucket.com/albums/ww95/JKazkid/?action=view&current=MDSig.jpg" target="_blank"><img src="http://i709.photobucket.com/albums/ww95/JKazkid/MDSig.jpg" border="0" alt="Photobucket"></a>
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Unread postAuthor: dewey-1 » Wed Jun 03, 2009 5:41 pm

jimmy101 wrote:What's the point of these shells? Might as well use round lead balls.

These are going to tumble like crazy unless you fire them from a rifled barrel. That nice point won't do anything since it won't be pointing in the right direction 99% of the time in flight. For 50% of the time they'll be flying sideways and might as well be cubed shaped.

To get them to be areodynamiclly stable you'll have to drill out the base a lot. Probably need to drill out nearly the entire length of the shell at something like 75% the outside diameter to get the center of drag far enough behind the center of mass. (The piddly little string hole won't make much difference.)


You think we do not understand all that?
It is more of a conceptual drawing and not even fishing sinkers!

It just looks like sinkers. You can not see how hollowed out the inside is.
Of course CP and CG have to be accounted for to create an aerodynamically stable projectile. It is also possible to include fins made of thin polycarbonate.

If you would like I can put balls on it. :D
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Unread postAuthor: suburban spudgunner » Wed Jun 03, 2009 8:47 pm

Well, I tried attaching a tail. This is what happened.

I don't think I even need to upload the video: the tail kept it from tumbling end over end, but it still didn't fly completely straight (as shown from the shape of the round after impact).

I'm thinking someone with a better gun and a more subjective way of testing this should probably try it. I might experiment with different types of tails if I have the time.

Damn! Now you've got me looking for subliminal messages in these forums...
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Attachments
DCAM0043.JPG
Ammo used
DCAM0044.JPG
Head of the ammo after impact
The definition of insanity is doing the same thing over and over again and expecting different results.
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Unread postAuthor: MountainousDew » Wed Jun 03, 2009 9:04 pm

Subliminal~Sublime~Lime~Lemon-Lime~Mountain Dew!
It's a conspiracy! And I'm the one behind it!
You might want to start running now, not sure why though... just a hunch.

Back on topic:
Thanks for the info; Maybe if someone has a gun that they can take to higher pressures, they could test your theory...
I think I'll still keep these in mind for my HPA gun coming up, though.

Edit: I wonder if a muzzle loader sabot might help...
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Unread postAuthor: jimmy101 » Thu Jun 04, 2009 1:35 pm

dewey-1 wrote:
jimmy101 wrote:What's the point of these shells? Might as well use round lead balls.

These are going to tumble like crazy unless you fire them from a rifled barrel. That nice point won't do anything since it won't be pointing in the right direction 99% of the time in flight. For 50% of the time they'll be flying sideways and might as well be cubed shaped.

To get them to be areodynamiclly stable you'll have to drill out the base a lot. Probably need to drill out nearly the entire length of the shell at something like 75% the outside diameter to get the center of drag far enough behind the center of mass. (The piddly little string hole won't make much difference.)


You think we do not understand all that?
It is more of a conceptual drawing and not even fishing sinkers!

It just looks like sinkers. You can not see how hollowed out the inside is.
Of course CP and CG have to be accounted for to create an aerodynamically stable projectile. It is also possible to include fins made of thin polycarbonate.

If you would like I can put balls on it. :D

Sorry, that was directed to the the original poster, BA_Noob, and a few others.

A bullet shape doesn't make something will "fly like a bullet". The barrel makes it "fly like a bullet".
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Unread postAuthor: jackssmirkingrevenge » Thu Jun 04, 2009 2:31 pm

Nice one guys hehe

john bunsenburner wrote:I am still a 14 year old therefore I have the illusion that getting to 4th base with a girl is my life's mission...


Started there :)

jeepkahn wrote:When you're old and married, your life's mission will be to not fall asleep in the dugout...While waiting to get your chance to bat... :shock:


Went there :roll:

john bunsenburner wrote:I am still a 14 year old therefore I have the illusion that getting to 4th base with a girl is my life's mission...


Back here :D

It will be a sad day when a multi-projectile sabot design is not recognised as a group amusement device.

Ah, life.

:D
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