Firing custom 2,400- to 3,600-grain bullets and reportedly matching the power of a World War I tank round, the SSK .950 JDJ is considered by many to be the world’s largest (movable) centerfire rifle. The firearm boasts massive power and an equally large frame. A base model .950 JDJ weighs roughly 85 pounds and virtually requires being fired from a benchrest or similar support piece. Only three were ever made. A call to SSK Industries revealed that the firearm’s action is no longer in production and that a custom-built .950 JDJ today would be in the realm of $17,000. Because of its power the firearm would normally be classified as a Destructive Device, but SSK was able to obtain a “Sporting Use Exception” that would allow them to be purchased much like any other rifle.

If the Tyrannosaurus rex ever came back though some botched theme park experiment, this would be the gun to use.

Unfortunately, the recoil from the rifle is rather “significant.” If that’s not enough to keep you a spectator, each custom-made cartridge for the gun is worth about half a day’s pay on minimum wage, if not more. In the below video several guys from Knights Rifles try out the first .950 JDJ ever made, a lightweight prototype that set the mold for the rest. While it may be a good 30 pounds lighter than its bigger cousins, the gun can “kick like a mule.”

An optional muzzle break for the rifle weighs 13 pounds.

The gun was designed by SSK Industries owner J.D. Jones. SSK manufactures a number of other firearms and firearm accessories including custom work.

Image screenshot of video by Knight Rifles Americas Muzzleloader on YouTube

What's Your Reaction?

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  • Buster

    When I was a kid I used to tape the shotgun shell to the top of a Daisy BB gun and it fired with no problem, it did bow in the muzzle of the BB gun.

    • Rob Pobe

      And that was when you still had the top of your head and could see?

    • Shocked_and_Amazed✓ᵛᵉʳᶦᶠᶦᵉᵈ

      When I did something like that all that happened was the shot she’ll did was swell up

      • ratguy

        thats all that happens. without the compression of a barrel the powder just ignites like flash powder. without the pressure build up there is no explosion

  • Commonsenseralph

    All of the republicans watching the video just orgasmed.
    Man, we could take out a whole bunch of hoodie wearing skittle carrying “hey you’re a little dark to be in this neighborhood” types with this cannon!!!! Woohoo!!!

    • Squidward

      For someone who refers to himself as “Commonsenseralph”, you certainly talk like someone with a distinct lack thereof. But then that’s a hallmark of someone of your (clearly) Democrap political persuasion, so no one’s really surprised.

      Say, do you have orgasms when they pass laws allowing later and later-term abortions? Do you squirt with joy when they propose laws letting more illegal immigrants into the country? My, you must keep alot of Kleenex handy.

      • Commonsenseralph

        Why do I get the feeling that you guys are all about a woman’s right to choose as long as the woman isn’t white?
        And you don’t care how late term it is- heck, that baby can vote and it’s still ok to abort!

      • Shocked_and_Amazed✓ᵛᵉʳᶦᶠᶦᵉᵈ

        It ain’t abortion when you shot a feral mugger dude. But maybe if momma had just one and she could do that after marriage and actually raised the child, some people would not be making the case that a minority baby aborted saves lives of both blacks and whites. Based on statistical evidence it appears to be true.
        I don’t think the government should pay extra for more babies. As a matter of fact, if you have one child and you are on welfare and you have another child, your benefits should decrease.

    • Rob Pobe

      Maybe President Obama will offer free Promethizine DM to poor Black boys who need to mix it up with Skittles and ‘Iced Tea” for that ‘Purple Drank Trayvon’ special, and then go out and find creepy crackers to Trayvon, just like President Obama says he used to do 35 years ago.


    A great weapon for the Kewnworth truck season that opens next month.

  • Matthew Jackson Smith

    for each one of the guys who firad this thang i see the same thing in all of there eyes. “im not gonna cry, im not gonna cry, i think i just broke my sholder but im not gonna cry”

    • Shocked_and_Amazed✓ᵛᵉʳᶦᶠᶦᵉᵈ

      See hell their retinas detatched

  • Elnonio

    While it may be a good 30 pounds lighter than its bigger cousins, the gun can “kick like a mule.”

    While? No, because it’s lighter it kicks more. Just saying…

  • Joseph A Correia III

    Ya think the recoil is bad.Being on the recieving end would be painless.