Jdj cartridges

The cartridges for sale are custom made from 20 Vulcan cases and the finished cartridge is 5″ in overall length, no powder, and an old fired spent electric primer. The head-stamp reads “REPLICA .950 JDJ, and the projectiles are made from solid brass (left projectile) or solid aluminum (right projectile);your choice .

Jdj cartridges. Aug 20, 2022 · A few of the cartridges he’s pioneered include the 6.5 mm JDJ, 6.5 JDJ #2, .309 JDJ and .375 JDJ, among others. None, however, were as much of a Goliath as his .950 JDJ that fired a 3,600-grain ...

Carpe Diem. 772 posts · Joined 2005. #7 · Aug 30, 2021. The 7-30 JDJ was named that because….it is based on the 7-30 Waters case. The .444 case was used for appropriate calibers greater than 7mm, smaller ones were usually on the .225 Winchester case.

The SSK .950 rifle, nicknamed Fat Mac, is an American single-shot rifle chambered in the extremely high-powered .950 JDJ round. SSK Industries, the makers of the rifle, received a Sporting Purposes Exception to deregulate the rifles. This means that the rifle could be bought and used by any American citizen that is at least 18 years of age without a …6.5 mm JDJ - Published Manufacturer Loading Data Recipe Type: PistolShop 6.5mm JDJ SSK-50 / Contender 14 inch Barrel with TSOB Scope Base and Thread Protector Material - Stainless Steel, Grade - Hunter available at $387.9. ... The designated Cartridge or Fixed Ammunition that the Barrel is chambered to …22 Feb 2014 ... ... JDJ! Special thanks to Calling Glory for the music ... Jones From Smoky Mountain Gear Review Shoots The 950 JDJ ... Flattest Shooting Cartridges by ...416 JDJ . The 416 JDJ was developed by SSK Industries and is based on the 444 Marlin case. It is one of the cartridges that SSK uses in the Thompson Contender.My project of converting my 14" Armor Alloy .35 Remington barrel to 358 JDJ is actually coming together. I have my quote from SSK and am readying everything to send off. This project started in about 2002 with the purchase of the barrel and has waited for available funds/time/energy/etc. I've been reading everything I can about the cartridge ...Yes, I am at least 21 years of age or am otherwise a qualified patient.12 Feb 2024 ... 0:00 Intro 1:46 9.3x72R 9:20 9.3x57mm 11:15 9.3x62mm 19:17 9.3x74R 22:25 9.3x64mm Brenneke 26:38 370 Sako (9.3x66mm) 28:44 38-55 Winchester ...

.270 JDJ (Cartridges of the World) Warning! CAUTION: THESE ARE VERY HOT LOADS! FOR USE IN SSK BARRELS ONLY! NOTES: Based on the 225 Winchester case (itself a modified 30-30 case) this improved chambering provides ample capacity to deliver impressive velocity from handgun-length barrels, now commonly 14-16 inches.Best …8 Aug 2015 ... Again, not that simple. The difference between the two cartridges is much more significant. The .500 Nitro Express cartridge is much weaker than ...JDM 2007-2012 Subaru Forester XT, 2007-2009 Subaru Legacy GT Motor 5 speed EJ20X-2GEN 2.0L 4 Cyl Engine. $1,999.00.Feb 27, 2014 · Ohio-based Firearm and cartridge manufacturer SSK Industries has unveiled their .950 JDJ rifle. Billed as the largest centerfire rifle ever made, only three of these guns have ever been built. The .950 JDJ highlighted in the video below is a prototype which weighs 50 pounds. The other two rifles which were manufactured weigh in at 110 pounds. ed hoening Discussion starter. 1 post · Joined 2006. #1 · Dec 14, 2006. im looking for a 416 jdj based on the 444 marlin case.If you have one to sell cotact me with details. thanks. Like. Sort by Oldest first.358 JDJ. The 358 JDJ was designed by JD Jones of SSK Industries and is based on the 444 Marlin case.

I only use Accu-Load because it was given to me, after this I might invest in QL especially if I'm going to keep playing around with non-standard cartridges. Here is what we were able to come up with: Cartridge : .375 JDJ. Bullet : …Cartridge Data Published On: January 27, 2015 at 11:32 pm by Bullet-Blog and last updated on January 27, 2015 at 11:32 pm Aliases .226 JD Jones, .226 SSK Summary The .226 JDJ (AKA: .226 JD Jones, .226 SSK) is a Center Fire cartridge with a Bullet Diameter of 0.224 in” (5.69mm) that is primarily usedA true “hand cannon,” the .375 JDJ pushes a 220-gr. bullet to 2300 f.p.s. It’s one of the best hunting cartridges you can put in a handgun for anything from deer to grizzlies. Anything that ...JDJ LINEUP OF CARTRIDGES - 01/16/2018 7:25 AM. JD Jones developed I believe the most successful line of "wildcat" cartridges for the Contender which turned the handgun hunting world around setting it full speed ahead. Basically he came up with the "maximum yet safe" cartridge in about every caliber for the Contender package, …Sep 6, 2023 · All of these types of custom rounds belong in a 14" or longer barrel. 1) Starting from a .30 Herrett barrel, rechamber to .30/30 Improved or .30 Alaskan. 2) Starting from a .30/30 barrel, rechamber to .308 Bellm. 3) .309 JDJ and its case capacity do not belong in a Contender barrel, handgun or rifle, in spite of SSK's hype to the contrary, but ... The .950 JDJ (24.1×70mm) is an obsolete powerful large caliber rifle cartridge developed by American gunsmith and weapon designer J. D. Jones of SSK Industries. Cartridge [ edit ] .950 JDJ cases are approximately 70 mm in length, and are based on a 20×110mm case shortened and necked up to accept the .950 in (24.1 mm) bullet.

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The well-known .375 JDJ wildcat cartridge is an interesting hunting cartridge for the handgun. It’s formed by necking down the .444 Marlin case to a .375. It has a reputation for putting down elephants, Cape buffalo, moose, elk and grizzly bear, as well as wild boar. As one might expect, the .375 JDJ cartridge generates a lot of muzzle blast ...The biggest bullet caliber is the .950 JDJ, a custom-made rifle cartridge developed by the American firearms company SSK Industries. It is designed to be one of the largest and most powerful rifle cartridges in existence.Find in stock 375 jdj ammo from the top online retailers to find the lowest price. Find Bulk 375 jdj ammunition fast and cheap with our ammunition search engine. JavaScript seems to be disabled in your browser.Sep 14, 2012 · As crafted by SSK Industries, .950 JDJ rifles use McMillan stocks and very large-diameter Krieger barrels fitted with a massive 18.2-lb muzzle brakes. The ammo produced by SSK features solid 3,600 grain bullets and CNC-machined cartridge brass. It is also possible (through a lot of work), to use a 20mm cannon casing shortened and necked-down ... JD Jones’ .950 JDJ cartridge is a generally described as the largest sporting rifle cartridge ever produced, producing more energy than even the 4-bore cartridges that match it in bore diameter. Only three of these rifles were made, and the original loading was a 2600 grain (168g) cast bullet moving at 2200 fps (670m/s), for a whopping 28,000 foot-pounds …

The 180 Speer is just a bit tougher. Say 150-200 fps “tougher” again using them in various 35’s builds confidence and experience. The 358 JDJ has the HP to utilize the 220 Speer as long as you load it to that. But as Seedy mentioned continued use of hot loads in a Contender can and will stretch frames.QUALITY CARTRIDGE BRASS 6.5 JDJ UNPRIMED 20/BAG. Item #: QC65JDJ. Price: $48.25. $2.41 per piece. Shipping: One flat fee of $12.95 per online order. Exclusions apply. Click for details.Cost Range. 5.56 NATO ammo for less than 50 cents per round, while supplies last!The cartridge is based on the 444 Marlin case necked down to hold a .375 caliber bullet. The 220 grain flat point bullets can be propelled as fast from the .375 JDJ as from the .375 Winchester big bore, making it an effective game cartridge. The 270 grain bullet can reach up to 2000 fps while three powders produced 1900 fps with the 300 grain ...2 Aug 2020 ... ... JDJ, 11 x 59mm R Gras, 12.7 x 108mm, 14.5 JDJ, 50-110 WCF, cartridges, Cartridges of the World, Discussion., Firearms, Guns, Links, Wikipedia.For as long as I can remember I have been handloading and shooting many popular wildcats, like the .357 Herrett, 7mm TCU, .243 AI, .280 AI, .300 Whisper, .375 JDJ, and several others. I learned about case forming and load development by working with these cartridges, often in the very early years when there was little available data.6.5 mm JDJ - Published Manufacturer Loading Data Recipe Type: PistolWarning! Notes: The .375 JDJ is made by simply running a .444 case through the .375 JDJ full length sizing die. The .375 is exceptionally easy to make. No fireforming is necessary. In loading this cartridge disregard the cannalure. Seat the 220s, 260s, 270s, and 285s with the base of the bullet seated to the end of the neck.The .950 JDJ (24.1×70mm) is a powerful large caliber rifle cartridge developed by American gunsmith and weapon designer J. D. Jones of SSK Industries. Die .950 JDJ ist eine sehr energiereiche Patrone, die von J. D. Jones entwickelt und bei SSK Industries produziert wurde. Die Namensergänzung JDJ weist auf den Entwickler hin. (de)

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Contents What Caliber is a 950 JDJ? The 950 JDJ is a custom-made rifle cartridge that measures .950 inches in diameter. It is one of the largest and most powerful rifle calibers in the world, designed by American firearms enthusiast J.D. Jones.The cartridge propels its 3,600 gr (230 g) bullet at approximately 2,200 ft/s (670 m/s). This yields a muzzle energy of 38,685 ft·lbf (52,450 J) [1] and a momentum of 154.1 Newton-seconds, about the same as a 20×102mm Vulcan round.It’s gonna cost you ($40 per round) and it’s gonna hurt. It may break your ribs when you fire it, but the .950 JDJ has one advantage over other cartridges in the 20mm antiaircraft category: it has an almost-unique ATFE ‘sporting use exception’ which allows you to own it without jumping through the burning hoops of fire completing NFA ...A .950 JDJ rifle can weigh upwards of 50 pounds or more due to the size and power of the cartridge. Is the .950 JDJ widely available? No, the .950 JDJ is not a commercially produced cartridge and is only available through custom gunsmiths and specialty ammunition manufacturers.Replacing ink cartridges in your printer can be a daunting task, but it doesn’t have to be. With this step-by-step guide, you’ll be able to quickly and easily install new ink cartr...22 Feb 2024 ... The 950 JDJ known as Fat Mac has achieved its own share of internet fame in recent years. Now, collectors had their opportunity to own the ...I only use Accu-Load because it was given to me, after this I might invest in QL especially if I'm going to keep playing around with non-standard cartridges. Here is what we were able to come up with: Cartridge : .375 JDJ. Bullet : …

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Wanna launch a 1/2-pound bullet at 2300 feet per second? It’s gonna cost you ($40 per round) and it’s gonna hurt. It may break your ribs when you fire it, but the …Designed. 1990s. Manufacturer. SSK Industries. The Whisper family of firearm cartridges is a group of wildcat cartridges developed in the early 1990s by J.D. Jones at SSK Industries. The Whisper family was developed as a line of accurate, multi-purpose cartridges using relatively heavy rifle bullets for a given caliber in subsonic loads.Nov 7, 2017 · The humongous .950 JDJ rifle is made by SSK Industries. One shown in the video is the serial number 1 of very few such rifles ever made. The creator of both the rifle and the cartridge is J.D. Jones, the founder of SSK Industries and the famous wildcat cartridge designer mostly known for designing the JDJ and Whisper families of cartridges. Cartridge Data Published On: January 27, 2015 at 11:32 pm by Bullet-Blog and last updated on January 27, 2015 at 11:32 pm Aliases .226 JD Jones, .226 SSK Summary The .226 JDJ (AKA: .226 JD Jones, .226 SSK) is a Center Fire cartridge with a Bullet Diameter of 0.224 in” (5.69mm) that is primarily used 950 jdj. $225.00. Quantity. Add to Cart. .950 JDJ cases are approximately 70 mm in length, and are based on a 20x110mm case shortened and necked up to accept the .950 in (24.1 mm) bullet. Projectiles are custom-made and most commonly weigh 3,600 grains (230 g) which is 8.2 oz. or over half a pound. This piece is pretty big. 2x2x6. Ohio -based Firearm and cartridge manufacturer SSK Industries has unveiled their .950 JDJ rifle. Billed as the largest centerfire rifle ever made, only three of these guns have ever been built. The .950 JDJ highlighted in the video below is a prototype which weighs 50 pounds. The other two rifles which were manufactured weigh in at 110 pounds.JD Jones’ .950 JDJ cartridge is generally described as the largest sporting rifle cartridge ever produced for arguably the strongest gun in the world for sporting purposes. Most Powerful Guns from J. D. Jones. Gunmaker, cartridge designer, and SSK Industries founder J. D. Jones forged a name for himself with quality hunting arms and ammunition.The several offhand targets with the shooter having to move was my contribution, and quickly done away with. Between hunting and IHMSA I decided to make up some cartridges—the 6.5, 7mm, and .375 JDJ reamers were ordered at the same time and the barrels all came together at the same time.Sep 6, 2023 · All of these types of custom rounds belong in a 14" or longer barrel. 1) Starting from a .30 Herrett barrel, rechamber to .30/30 Improved or .30 Alaskan. 2) Starting from a .30/30 barrel, rechamber to .308 Bellm. 3) .309 JDJ and its case capacity do not belong in a Contender barrel, handgun or rifle, in spite of SSK's hype to the contrary, but ... ….

Re: encore 375 JDJ data. « Reply #1 on: July 26, 2011, 12:15:35 AM ». All you need is Contender data. If you know how to reload and know pressure signs, all you need is a starting point. It's up to you, the hopefully competent reloader, to determine the maximum load in your gun. Logged.Sep 14, 2012 · As crafted by SSK Industries, .950 JDJ rifles use McMillan stocks and very large-diameter Krieger barrels fitted with a massive 18.2-lb muzzle brakes. The ammo produced by SSK features solid 3,600 grain bullets and CNC-machined cartridge brass. It is also possible (through a lot of work), to use a 20mm cannon casing shortened and necked-down ... 6.5 JDJ. By developing an extensive line of wildcat cartridges for the Contender, J.D. Jones of SSK Industries did more than anyone outside of Thompson/Center to promote Warren Center’s single-shot pistol. While the Contender handles rimless cartridges such as the .223 Remington and 7mm TCU without a hitch, J.D. has a passion for rimmed cases.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) rifle cartridge.When Nosler claimed the title of fastest 6.5mm factory cartridge, Weatherby responded with the 6.5-.300. As you’ve guessed, it’s a .300 Wby. necked down to 6.5mm. With massive propellant capacity in that full-magnum-length case, the 6.5-.300 Wby. drives bullets with amazing speed.24 Jan 2024 ... The 950 JDJ FAT MAC (The World's Most Powerful Rifle!!!) ... Predator Cartridges and Rifles You NEED To Know ... 5 Best Cartridges for Long Range ...The .950 JDJ cartridge is a large bore rifle cartridge developed by J.D. Jones of SSK Industries. Jones is also the noted developer of many other well known cartridges, such as the Whisper family. Cartridge The .950 JDJ is among the world s most….950 JDJ, Replica Single Cartridges (449) Filter. Showing all 2 results .950 JDJ Replica, Brass projectile, Not Live, One Cartridge $ 199. ... OUT OF STOCK.950 JDJ Replica, with Solid Aluminum Projectile, One Cartridge $ 0.00. Out of stock. Join the waitlist to be notified when this product becomes available. Manufacturer Price. Min ... Jdj cartridges, Instead of a 375 JDJ on your Encore, how about just getting a 375 H&H barrel for it? That way you're not trying to "hot rod" a cartridge past it's design and turn it into something it was never intended to be. There's plenty of room in the H&H chambering to give you (hopefully) anything you're looking for, and do it with proven safe load data., The .950 JDJ cartridge is a large-bore rifle cartridge developed by J.D. Jones of SSK Industries. Jones is also the noted developer of many other well-known cartridges, such as the Whisper family. Cartridge. The .950 JDJ is among the world's most-powerful, and largest-caliber, rifle cartridges. Loaded .950 JDJ cartridges are …, Ohio -based Firearm and cartridge manufacturer SSK Industries has unveiled their .950 JDJ rifle. Billed as the largest centerfire rifle ever made, only three of these guns have ever been built. The .950 JDJ highlighted in the video below is a prototype which weighs 50 pounds. The other two rifles which were manufactured weigh in at 110 pounds., Wildcat Cartridges. .309 JDJ. column By: Layne Simpson | December, 18. The .309 JDJ is one of six cartridges on the .444 Marlin case developed by J.D. Jones of SSK Industries for the Thompson/Center Contender single …, Jan 16, 2018 · JDJ LINEUP OF CARTRIDGES - 01/16/2018 7:25 AM. JD Jones developed I believe the most successful line of "wildcat" cartridges for the Contender which turned the handgun hunting world around setting it full speed ahead. Basically he came up with the "maximum yet safe" cartridge in about every caliber for the Contender package, developed several ... , The AMMO our Partners' sell is loaded with a BULLET that is designed and ... 375 JDJ Your Rating. Quality. 1 star 2 stars 3 stars 4 stars 5 stars. Price. 1 star 2 ..., 14 Jan 2024 ... In this video I compare the newest and greatest cartridges to the old cartridges ... The 950 JDJ FAT MAC (The World's Most Powerful Rifle!!!)., Rock Island Auction Company has released a video where they shoot some of the largest non-military cartridges and rifles ever produced. The three calibers include the .700 Nitro Express, 4 bore and .950 JDJ. And if you are going to shoot this kind of hand cannons, then you first need to warm up with some low recoiling cartridges like 12 …, The .309 JDJ is one of six cartridges on the .444 Marlin case developed by J.D. Jones of SSK Industries for the Thompson/Center Contender single-shot pistol. Despite its name, it is loaded with .308-inch bullets. Like numerous other cartridges developed by Jones, the .309 JDJ is proprietary, which means he maintains control over distribution of ..., 950 JDJ. The 950 JDJ was designed by J.D. Jones from SSK Industries in 1996 and was based on the 20mm Vulcan case that was shortened and necked down. The SSK Industries Fatmac Rifle that was featured on Rock Island Auctions., This cartridge was innovative and effective, but would become obsolete by the end of the war, and no serious effort was made to continue making Burnside carbines ... “Fat Mac” – SSK Industries’ .950 JDJ Rifle. Related Articles. Aircraft MGs British .303 Browning Mk II* Aircraft Machine Gun October 19, 2021 Ian McCollum ..., 111 posts · Joined 2005. #1 · Oct 9, 2011. Hello everyone. I am thinking of building a 41 JDJ rimless on a 93 Mauser. I will load it light in consideration of the action. The gun is a Spanish 1916 in 7.62x51. I will use 30-06 brass to to form cases. I may also make the gun a 41-08 due to a steady supply of 7.62x51 brass., 6.5 JDJ. By developing an extensive line of wildcat cartridges for the Contender, J.D. Jones of SSK Industries did more than anyone outside of Thompson/Center to promote Warren Center’s single-shot pistol. While the Contender handles rimless cartridges such as the .223 Remington and 7mm TCU without a hitch, J.D. has a passion for rimmed cases., Jan 24, 2019 · A cartridge I selected is the .309 JDJ, one of the many top-performing wildcat creations by J.D. Jones of SSK Industries, an extremely knowledgeable ballistician, inventor and hunter. , 411-JDJ With Accurate Mold 340gr Bullets. After purchasing two molds from Tom at Accurate Molds for the 411-JDJ, I have begun load development for that bullet. I cast off the 41-340J (gas check bullet) and some 41-340K (PB) bullets. Decided to start this load development using RL-7 since its position on the relative burn rate chart is favorable ..., It’s gonna cost you ($40 per round) and it’s gonna hurt. It may break your ribs when you fire it, but the .950 JDJ has one advantage over other cartridges in the 20mm antiaircraft category: it has an almost-unique ATFE ‘sporting use exception’ which allows you to own it without jumping through the burning hoops of fire completing NFA ..., rare and hard to find 16.25 375 jdj super sixteen contender rifle barrel – t/c thompson center stainless steel – front sight present – rear sight present – lightly used beautiful hard hitting stainless steel rifle barrel. chambered in the wildcat 375 jdj cartridge. 16.25 oal stainless steel heavy bull barrel – bore is sharp and prominent., Quality Cartridge started in 1992, producing obsolete and wildcat ammunition for a small group of fellow shooters. ... Quality Cartridge Brass 375 JDJ Unprimed Bag of 20 . 2. $44.50. Less than 5 in stock Item #: QC828952 $2.22 per piece. QUALITY CARTRIDGE BRASS 375 TAYLOR UNPRIMED 20/BAG . $55.50., When it comes to printing documents and photos, having a reliable printer is essential. One popular choice among consumers is the Epson L3110 printer, known for its high-quality pr..., Here you have the 950 JDJ. The case is made of a 20mm Vulcan case shortened to 4 inches and necked up to 95 caliber. It is not considered a destructive device by the ATF. The 950 JDJ came to life in 1996 by JD Jones but sadly is no longer in production. With the individual hand turned bronze bullets costing $10 a piece and a live cartridge ... , Instead of a 375 JDJ on your Encore, how about just getting a 375 H&H barrel for it? That way you're not trying to "hot rod" a cartridge past it's design and turn it into something it was never intended to be. There's plenty of room in the H&H chambering to give you (hopefully) anything you're looking for, and do it with proven safe load data., The cartridge propels its 3,600 gr (230 g) bullet at approximately 2,200 ft/s (670 m/s). This yields a muzzle energy of 38,685 ft·lbf (52,450 J) [1] and a momentum of 154.1 Newton-seconds, about the same as a 20×102mm Vulcan round., Cartridge Collector > Cartridges > IMPERIAL SPORTING RIFLE > IMPERIAL SPORTING .50" UPWARDS > 950 JDJ. 950 JDJ. The 950 JDJ was designed by J.D. Jones from SSK Industries in 1996 and was based on the 20mm Vulcan case that was shortened and necked down. The SSK Industries Fatmac Rifle that was featured on Rock Island Auctions, Meet the .950 JDJ. When it comes to a rifle cartridge, nothing is larger than the .950 JDJ, which uses 240 grains of powder to push a 2,400-grain bullet at 2,100 feet per second (FPS). In addition ..., The cartridges for sale are custom made from 20 Vulcan cases and the finished cartridge is 5″ in overall length, no powder, and an old fired spent electric primer. The head-stamp reads “REPLICA .950 JDJ, and the projectiles are made from solid brass (left projectile) or solid aluminum (right projectile);your choice ., My project of converting my 14" Armor Alloy .35 Remington barrel to 358 JDJ is actually coming together. I have my quote from SSK and am readying everything to send off. This project started in about 2002 with the purchase of the barrel and has waited for available funds/time/energy/etc. I've been reading everything I can about the cartridge ..., However, use of these bullets requires special handloading techniques (deeper bullet seating and a reduction in powder charge). (Cartridges of the World 9th Edition) Be Alert: Publisher cannot be responsible for errors in published load data. Wt. .257 JDJ reloading data with 4 loads. Using bullets from HP, SP., The cartridge isn't particularly OAL critical, as long as it easily seats flush after forming and loading. I will be in the hunting woods next week, so I am anxious to get this squared away. dale53. .327 Meteor. Posts: …, a .338 JDJ #1 (marked with #1) that was based off the .303 case. I then sent the barrel to Dennis Lawrence or Brian (been a while) at SSK, who was at the time experimenting with the un yet released, .338 JDJ #2 (off the .444 Marlin case), and rechambered my barrel and had either modified my dies or got another set, to work with it., The Different 9.3mm Cartridges. By Lukas Schulte. 9.3x62mm, 9.3x74R, and 9.3x72R. The 9.3 (.366-inch) diameter is one of the most versatile calibers for hunting bullets. Loaded appropriately in a variety of different cartridges, .366-inch bullets are a great option for game from small antelope and to moose, eland, even buffalo, and elephants., 9) 7MM Remington SAUM: Introduced in 2001, the 7mm SAUM (Short Action Ultra Magnum), along with its sister cartridge, the .300 Rem. SAUM, was Remington’s entry into the then-new world of short magnums. Basically, this short cartridge can do anything the 7mm Rem. Mag. can do, but it does it in a lighter, shorter, fast-handling rifle while ..., J. D. Jones. J. D. Jones (born November 21, 1936) is an American firearms and cartridge designer, firearms writer and founder of SSK Industries. Jones began hunting at an early age, and became interested in bullet casting and handloading firearms cartridges. In the 1960s, Jones collaborated with Lee Jurras to create the Super Vel line of high ..., J. D. Jones. J. D. Jones (born November 21, 1936) is an American firearms and cartridge designer, firearms writer and founder of SSK Industries. Jones began hunting at an early age, and became interested in bullet casting and handloading firearms cartridges. In the 1960s, Jones collaborated with Lee Jurras to create the Super Vel line of high ...