Shotgun Fired With No Barrel

Long Island Topshots posted a slow motion video. It shows what happens to a shotgun shell when fired from a shotgun without a barrel.

According to Long Island Topshots the shot fired About 100 yards and 654 pounds of torque.

Nicholas C

Co-Founder of KRISSTALK forums, an owner’s support group and all things KRISS Vector related. Nick found his passion through competitive shooting while living in NY. He participates in USPSA and 3Gun. He loves all things that shoots and flashlights. Really really bright flashlights.

Any questions please email him at nicholas.c@staff.thefirearmblog.com

• Observer

Would that make it the ultimate short-barreled shotgun?

• David

Is a short barreled shotgun without a barrel really a short barreled shotgun?

• dan citizen

is “torque” what we’re using for ballistics now? Honestly, I like it better than FPE.

All joking aside… Once again TFB brings us firearms gold! I’ve always wondered what would happen if you did this, but was never quite willing to try it.

Thank you TFB

• RocketScientist

Torque and Energy and Work are basically the same thing… or two sides of the same coin might be a better wording. All are the cross-product of a force and a distance. We tend to use one when referring to angular force and one linear, but that is more a convention than any fundamental difference. The innate relationship between force, distance and energy/torque/work is the same. If you need further evidence look at the fact that power is energy over time, which is why you can calculate horsepower given a torque and an angular velocity (rotational rate, RPM) just as easily as you can given energy and time.

• Stephen

NO! Torque and Energy are NOT the same thing. They have different units and do NOT equate. Torque does not require motion therefore does zero work. Torque + motion = work. They are NOT the same. lbf != lbm. W != J. etc.

• RocketScientist

Not sure why you’re bringing pound-mass or slugs into this, I was dealing exclusively with force. We can stick to SI units (with their explicit differentiation between force and mass) if it’s too confusing for you. SI unit for energy AND work is the Joule which is identically defined as a Newton (force) meter (distance). The SI unit for torque is (you guessed it) Newton meter. This is because all these quantities mathematically represent the cross product of a distance and a force. Whether this is a force acting THROUGH a distance, or OVER a distance does not make a difference mathematically. Which is why they have the same units. You will note I did not say they are IDENTICALLY the same, but basically the same. There is mathematically and fundamentally no difference between the quantities, but the differences have more to do with convenience and specificity of use. Yes, torque is used to refer to force acting OVER a distance, and can occur statically or dynamically. Yes work is a force acting THROUGH a distance, and we only refer to this as work when it is occurring dynamically, and energy is the POTENTIAL to do work (ie static work). But guess what, if you apply a static torque, you are adding ENERGY to the system exactly equal to the torque applied. If you are applying a torque dynamically with resultant motion, you are doing work. If static energy is released, it does work (either mechanical or heat) identically equivalent to the amount of energy released. What you are arguing is that asteroids, meteors, and meteoroids are not the same thing. Yes, asteroid refers to a rock floating in space, meteor refers to one falling through earth’s atmosphere, and meteoroid refers to one that has landed on the ground. But it’s all the same rock.

• AlDeLarge

Torque is a torsional force, no movement is required. You’re obviously confused by the distance part of the units of torque. It’s an expression of leverage, not movement. It’s not even superficially similar to work, energy, power, or momentum, all of which require motion. Torque is a measurement of force, no more, no less.

If torque produces movement, torque times that movement is work. Divide that by time and you have power. It’s the same, no matter if it’s linear or angular. Force is force, distance is distance, time is time, and power is power. All related, but distinctly different.

• Michael Groszek

You are so ridiculously wrong that I wonder whether you are a chat bot. Work is the dot product (I.e. a scalar quantity) of the force and displacement vectors. Torque is the cross product (vector). They are completely different and your assertion that one being at right angles to another is irrelevant is completely wrong; a dot product is zero when the vectors are perpendicular, and a cross product is zero when the vectors are aligned.
Stop filling people’s heads with crap and go back to flipping burgers.

• Phillip Cooper

Obviously,without containment to the shell, the weakest part will let go. In this caase the plastic shell body. Noone is surprised.
Do it with a metallic cartridge and the casing will let go. Sure, some energy will be imparted to the projectile- but it’s all going to be the projectile save for the part against the breech face (which will also be subject to sheering forces, or just being blown aside).
Ask any guy that misspent his youth. I may or may not have been party to engaging in this very sort of experiment in 1980, and shitting myself when it let go. ðŸ˜‰

• JR

100 yards, with bird shot and NO barrel? April Fools day is late this year?

• Glock27

I agree these numbers sound a little off. As you can see in the picture half of the energy blows out of the side of the shell, taking a lot of in burnt powder with it.

• MP

It probably traveled 100yards. That does not mean it had useful energy at 100yards.

• Pete

The follow up comment is Long Island Topshots saying he was being sarcastic. I’m guessing they didn’t even measure it. Anyone who has set bird shot off on a stove or the like knows it prob wouldn’t get 100 inches never mind yards. The video is mostly interesting to see how the case self destructs and the spread starts dramatically opening up 6 inches or so out. Any ammo set off without a bbl to focus the energy is mostly nothing more than a plug your ears and don’t poke your eye out kind of affair.

• andy

As an engineer, seeing torque with just pounds as a unit drives me insane…

• patrickiv

Inch-pounds? Foot-pounds? Mile-pounds? COME ON!

• andy

EXACTLY!!!!

• Menger40

Is the video link broken for anyone else?

• Graham2

Doesn’t work for me either, which is a shame!

• Cymond

me too

• USMC03Vet
• USMC03Vet
• guest

“About 100 yards and 654 pounds of torque.”

Saywhat?

• an engineering mind

exactly! how many horsepower is that?!

• Sulaco

Sorry, what exacally was the point to this?

• FALCOR

So how did they measure this so called “torque”???? I do know, SNAP-ON does not sell chronographs.