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Sureshot BL-525 and UHMW compound rounds

Built a combustion cannon? Then post it here! This section is for completed, finished cannons that you have built. Please include pictures and information.
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Sureshot BL-525 and UHMW compound rounds

Unread postAuthor: jagerbond » Mon Aug 03, 2009 6:01 am

5" chamber
2.5" barrel
1.25:1 C:B ratio
All the Sureshot goodies, P-mount for fuel and site mount.

UHMW Compound Round
4.375" Length
265 grams
.5 Caliber CP-CG ratio

500+ FPS - 2,200ft./lbs. energy :shock:

Hope you all enjoy the video. UHMW rounds in 1.7, 2.0, 2.5 all being posted this week to the web site.


[youtube]http://www.youtube.com/watch?v=j-tZn4eyY8Q[/youtube]
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Unread postAuthor: jackssmirkingrevenge » Mon Aug 03, 2009 6:18 am

That's roughly the same muzzle energy as a 6 round burst from a 9mm submachinegun :D Love the shot that ended up on the roof :)

The power potential is clearly there, when are you going to try some sub-calibre saboted rounds?
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Unread postAuthor: jagerbond » Mon Aug 03, 2009 6:28 am

Most of the materials are at the shop. I've got a big box of used carbide endmills too. Testing and high end stuff can ensue... Especially now that the manufacturing is finished for the 1.7, 2.0 and 2.5.

We've been trying to buy a plastic injection machine of the west coast to offer a cost effective way to handle the sub caliber stuff. 2 machines we have committed to purchase have fallen or tipped over while attempting to load them. We are asking ourselves "what are the chances?".

I got to get a forklift ride to the roof.
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Unread postAuthor: dewey-1 » Mon Aug 03, 2009 6:34 am

That was impressive as he11!

I watched that video many times.
The projectile appears to be quite stable.
Any longer range shots planned?
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Unread postAuthor: jackssmirkingrevenge » Mon Aug 03, 2009 6:44 am

Looking forward to see what you can come up with, piercing that 1/8" plate is certainly technically possible with the right ammunition ;)
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Unread postAuthor: Ragnarok » Mon Aug 03, 2009 9:33 am

jackssmirkingrevenge wrote:...piercing that 1/8" plate is certainly technically possible with the right ammunition.

Easily so, given I think it's possible to get through 1/2" steel with a muzzle energy of a little over 300 ft-lbf - and not just with a pinpoint hole either.
It would take the right projectile, but the numbers suggest that it's feasible.

With over 2000+ ft-lbf on tap, 1/8" steel shouldn't be too much of a chore.
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Does that thing kinda look like a big cat to you?
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Unread postAuthor: theBOOM » Mon Aug 03, 2009 6:26 pm

Wow amazing dude! That is some massive recoil and like people said they seem to be very stable in flight!
I've seen other advanced spudgun videos on youtube and many of them had trouble going threw a tv screen at POINT BLANK... you did it at like 20 yards? :P HOLY nice job man...

You made a beast of a cannon :p
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Unread postAuthor: USGF » Tue Aug 04, 2009 5:11 pm

theBOOM wrote:Wow amazing dude! That is some massive recoil and like people said they seem to be very stable in flight!
I've seen other advanced spudgun videos on youtube and many of them had trouble going threw a tv screen at POINT BLANK... you did it at like 20 yards? :P HOLY nice job man...

You made a beast of a cannon :p


Boom,

The videos really don't do the things justice. The anodized parts on the newer units push them over the top. They always had power, now the new rounds make them shoot like true guns, not overgrown pop guns. Too bad they are so much work and hence somewhat expensive. Mike has more new product under development to reduce prices for our budget minded customers. BTW, that was 30 yards....

USGF
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very nice !

Unread postAuthor: eggic » Sun Nov 22, 2009 5:59 pm

Nice video im thinking of geting some for christmas :P
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Re: very nice !

Unread postAuthor: USGF » Wed Nov 25, 2009 5:50 am

eggic wrote:Nice video im thinking of geting some for christmas :P


You should get some more often.

USGF :oops:
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Unread postAuthor: Spudnyk » Mon Jan 04, 2010 2:56 pm

Does anybody know the construction of these so that I make some of my own
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Unread postAuthor: jagerbond » Mon Jan 04, 2010 3:18 pm

UHMW tail assembly, steel domed cap. We're using a socket head cap screw to fasten the cap to tail assembly. If your creating your own, you'll need to pay close attention to the CP and CG differential. You will need at least 1/2 caliber difference. Our design you see here is a result of many revisions and our criteria was to make as short as possible (lowering drag, conserving material and keeping the cost down), with 1/2 caliber CP / CG differential.
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Unread postAuthor: exotechmaster » Thu May 05, 2011 8:27 pm

compound spuds are exellent!!
they are highly durable compaired to most ammo
and they are balanced (potato is not), have a sealing ring
which makes them able to hit harder and fly further than most things
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Unread postAuthor: jackssmirkingrevenge » Fri May 06, 2011 6:06 am

exotechmaster wrote:compound spuds are excellent!


We've noticed ;) posting some pictures and/or videos of your personal experience with these rounds is always appreciated though.
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Unread postAuthor: motoman807 » Thu May 19, 2011 12:54 pm

Watermelon shot. Now you see it...Now you don't :wink:
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