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Airguns, AirSoft and MilSim Air rifles and pistols, AirSoft and Mil Sim Discussion

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  #1  
Old 08-15-2017, 11:47 AM
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Arrow CA legal - "exploding" targets

I saw these on a U tube video....

https://www.umarexusa.com/products/big-blast-caps


It is a cap you screw onto an empty soda pop bottle
16oz- 2 liters all use the same cap size


You insert a needle inflator, same as for a basketball,football,volleyball, into the cap and pump the soda bottle up to 90-120 psi.


When you shoot the bottle, it goes BOOM!!!


Caps are Reusable until they get shot or lost....



Has anyone used these????
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  #2  
Old 08-15-2017, 11:47 AM
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Old 08-15-2017, 11:49 AM
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1 cup of water with a few drops of dish soap should make some bubbles

https://www.youtube.com/watch?v=Ijeo-zzhyjU

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Old 08-15-2017, 11:50 AM
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https://www.youtube.com/watch?v=hEJXDacPSl4

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Old 08-15-2017, 12:01 PM
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Doesn't look like they are widely available yet from what I can see.
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Old 08-15-2017, 12:12 PM
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Sounds like the guy got his gun lingo from DeLeon.

'Pop it with a 700 feet per second or higher caliber rifle, shotgun, rifle"
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Old 08-15-2017, 12:34 PM
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Another thought, is a 2 liter cap big enough that you could use a sheet metal step bit to drill out and then pull in a valve stem?

http://m.ebay.com/itm/LOT-100-TR-413...%257Ciid%253A1

100 for $15

More danger as the valve stem has a lot of mass that could get launched
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Old 08-15-2017, 1:11 PM
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A two liter cap would probably be close. 1/2 gallon Cranberry juice, Apple, etc. would work.
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Old 08-15-2017, 2:59 PM
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So standard stems are rated to 65 psi...

HP should work... .453 hole

Tubeless Snap-In Valves for High-Pressure
Tubeless Snap-In Valves for High Pressure
Tubeless snap-in valves for high-pressure applications are designed for medium and heavy-duty trucks and trailers and must be used when recommended cold tire inflation pressures exceed 65 psi. High-pressure snap-in valves for .453" rim holes allow a maximum cold inflation pressure of 80 psi while those for .625" rim holes allow a maximum cold inflation pressure of 100 psi. Typically used in steel wheels, high-pressure snap-in valves combine a thicker rubber snap-in base with a metal barrel and a plastic cap. Effective lengths range from about 1-1/4" to 2".
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Old 08-15-2017, 3:12 PM
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No fire risk. Cool!
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Old 08-17-2017, 8:03 AM
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Use a Presta valve for a bicycle wheel. Only needs a .236 (6mm) hole and is designed for high pressure.
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Old 08-18-2017, 11:01 PM
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Presta do handle high pressure...

The set is 10 caps and 2 needles for $20

I found presta valves for $15/ 2


http://m.ebay.com/itm/Stans-No-Tubes...%257Ciid%253A8
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Old 09-21-2017, 10:40 PM
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Tying blaze orange streamers on the caps....

EDIT: I must confess I was sort of hoping for a minor accident when Bubba was out there resetting the tipped bottles, but the gun barrel was pointed in a safe direction I see now...

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Old 09-22-2017, 1:54 PM
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So, OP - didya ever buy any of the Big Blast Caps or try to make some of yer own? I saw a local WalMart had some in stock online for only $9.97 so I ordered a couple of 10-packs and will pick them up this afternoon. Hoping to get out this weekend to try them out!

More YouTube videos & info. The second video tests how much pressure different bottles can take before failing/exploding. I'm thinking I'll probably stay around 100PSI for a safety buffer.




Last edited by WartHog; 09-22-2017 at 2:41 PM..
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Old 09-26-2017, 12:08 PM
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I tried them out up at the lake on Sunday. Pumped 2-liter and 16-20oz pop bottles up to 100psi with a bicycle pump - wonder how many 2-liter bottles filled to 100psi a Harbor Freight 11 gallon air tank pressurized to 125 psi would do?

They definitely are not Backyard-friendly - my brother was 1/4 mile up the lake away from me when I shot a 2-liter and said it sounded like a Centerfire Hunting Rifle going off.

If you watch carefully in that testing video I linked to, you can see very small pieces of plastic bits/shrapnel being forcefully shot about by the bottles exploding. Gloves, Eye, and Hearing protection should be used when filling/handling filled bottles and any bystanders in the immediate area should at least be wearing eye protection and foam earplugs. I also would suggest only using bottles that are in excellent condition - nothing that has been crushed or distorted in any way to avoid possible weak spots in the plastic.

These are not Toys so younguns should be allowed to fill/handle them only if they can be trusted to always follow safety procedures!

Last edited by WartHog; 09-26-2017 at 12:11 PM..
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Old 10-17-2017, 1:40 PM
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I want to sneak some of these into my local range. would the scraps from the plastic be easy to recover because i'm not trying to leave trash behind.
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Old 10-19-2017, 5:57 PM
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From the few I've shot, pieces ranged from 1" diameter and up. Pieces were thrown up to 20' away. For the most part, the pieces were good sized.

Last edited by WartHog; 10-19-2017 at 6:49 PM..
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Old 10-19-2017, 6:13 PM
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Wow those things are no joke! What is the minimum air rifle someone has used to pop them - would a red ryder work or no way?
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Old 10-19-2017, 6:21 PM
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just do not shoot them on blm land.
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Old 10-19-2017, 9:04 PM
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Quote:
Originally Posted by SkyHawk View Post
Wow those things are no joke! What is the minimum air rifle someone has used to pop them - would a red ryder work or no way?
I had read that if your air gun doesn't have enough fps, the shot can bounce off dangerously. I'd think a .177 and 700fps minimum.

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just do not shoot them on blm land.
And why is that? As long as one picks up the debris, I don't see how there would be a issue?
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  #21  
Old 10-20-2017, 7:38 AM
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Let's see how long it take the Peoples Republik of Kalifornistan to ban this.
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  #22  
Old 11-01-2017, 7:15 PM
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Got an email saying they were back in stock. So I a bought set to try them out.
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Originally Posted by ar15barrels
Unscrew the lid. There is a foil seal there.
Pull the seal off and screw the lid back on.
Then you can squeeze the mustard and it will come out of the bottle..

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Old 11-02-2017, 7:55 AM
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Quote:
Originally Posted by BroncoBob View Post
Got an email saying they were back in stock. So I a bought set to try them out.
Saw them at Wally World the other day next to the ammo. I forget the exact price, but not expensive.
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Old 11-02-2017, 9:33 AM
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I used a tire fill stem and just drilled an appropriately sized hole in a Dr. Pepper screw top. A 20 oz Dr. Pepper bottle held 110psi, I tested it in the garage and sounded like a cannon shot when I hit it.
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  #25  
Old 11-06-2017, 6:50 PM
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Got mine in the mail, will collect plastic bottles
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Originally Posted by ar15barrels
Unscrew the lid. There is a foil seal there.
Pull the seal off and screw the lid back on.
Then you can squeeze the mustard and it will come out of the bottle..

Liberals are termites eating at the foundation of our constitution.
Michael Reagan
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