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The World’s Largest Centerfire Rifle: SSK’s .950 JDJ

The SSK .950 JDJ rifle in all its glory.

The SSK .950 JDJ rifle in all its glory.

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

Any views or opinions expressed in this article are those of the author and do not reflect those of OutdoorHub. Comments on this article reflect the sole opinions of their writers.
  • 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?

  • 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!

    • 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.

  • http://cia.americanspecialops.com/air-branch/ NASA

    OUTSTANDING!!

    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”