I vaguely remember reading of a wildcat cartridge dreamt up by somebody in Texas that had a 4.5mm bullet and a .50cal case. http://iaaforum.org/forum3/viewtopic.php?f=8&t=8665. if our work is used is requested. ), German Army's Wiesel Replacement (Concept). I took a .50 BMG cartridge and swaged the neck down in about a dozen steps to accept an 80g .223 projectile. From hunters and military members, to competition shooters and general firearm enthusiasts, we welcome anyone who values and respects the way of the firearm. i remember something from a few years back that the McMillian brothers were messing around with this. Armscor has been there and done that! Not to mention they already have the 50 cal for personnel at extreme distances and/or disabling vehicles. has an … The 10mm necked down to 7.62 or 0.308" was one I considered but no dies are avalible directly and would be a custom set of dies or having to modify other dies to do various steps. This is a 50 BMG case necked all the way down to .17 caliber. Because this cartridge is in large-scale production, it is the most popular of all of the 20-Caliber cartridges listed in this guide, even though it is the newest of them all. How many rounds do you think a gun like that could get off before its needs the barrel and a butt load of springs replaced? Maybe even a 45 necked to 22. It seems to use the same primer as the BMG .315 20 Vulcan brass is around $5 raw. How many rounds can it get off in a short period of time before overheating?Another thing to consider is simple ballistics. Used against coyotes it basically liquidized the poor animal at extreme ranges about 1000m too. My gun store had ten boxes of black hills 40 grain ammo for $23.00 for a box of 50. I looked at one yesterday for $600.00 at my gun shop. Which is probably why you describe it as "crewed served." PLEASE READ THE ENTIRE LISTING BEFORE BIDDING. Ever hear of the .50 Peacekeeper? “This new cartridge was engineered and designed specifically for the Desert Eagle Pistol, keeping in mind that the Desert Eagle Pistol is known worldwide for its awesome firepower and performance,” said Magnum Research design lead Jim Tertin. Atom The powder itself moves at maybe 7000 fps. why stop at .50? Note: Only a member of this blog may post a comment. Weird looking. The 2003 attack on Karbala & the death of the US Army's "Deep Strike" concept with rotary winged aircraft. The stuff I found says it's not in production because of improved aiming for the 20mm. Includes a full range of cartridges from the 2.7mm and 3mm Kolibri up to 50 Cal cartridges such as the 500 Tranter, 50 G.I., 50 A&E (Desert Eagle), and the 500 S&W. A bullet, like everything, has a terminal velocity. Here an inside view of the button snap and the secondary button fastener. The gun is pretty solid, and it is an affordable option to the F.N. Minuteman. ?. i imagine it would be tough to do and the weapon itself would be a beast but that's where we're headed anyway. .50 BMG is already a  horrendously inefficient and large round anyway. How about: http://en.wikipedia.org/wiki/Raufoss_Mk_211, http://en.wikipedia.org/wiki/Neopup_PAW-20. After it gets going so fast one of two things will happen: it will literally come apart or the turbulence will cause it to become unstable and veer wildly off course in an unpredictable direction. Subscribe to our monthly Newsletter to receive firearm news, product discounts from your favorite Industry Partners, and more. The writer mentioning the sabot got me thinking. Feb 12, 2020; Add bookmark #23 THEIS said: Hi, Acknowledgment of SNAFU! It is also possible (through a lot of work), to use a 20mm cannon casing shortened and necked-down.The primer pocket is swaged out to accept a .50 cal machine gun primer. Jan 31, 2020 45 10 Ohio, USA. i'm thinking more ma deuce type weapon than some shoulder fired rifle. believes in Fair Use. While they fired, barrel life was around 50 shots. My idea? The ammo produced by SSK features solid 3,600 grain bullets and CNC-machined cartridge brass. Defense, Firearms, Politics & Fitness News Aggregator/Blog... Wouldn't the powder have to burn a bit quick? it took .50 projectiles to 3400fps (.50 improved can only make 3000). AR15.Com reserves the right to overwrite or replace any affiliate, commercial, or monetizable links, posted by users, with our own. (The pic was of a blue stocked gun at least 5 feet tall standing next to a guy). Now it sounds like we are getting there. There's a lot of factors to consider here that haven't been previously listed (ignoring the forum post I can't get too). You can get those speeds from their 20mm necked down to .510cal. Why it isn't widespread is beyond me but the stats on this little wildcat are impressive. A necked down 9mm to a 22 cal. The 5.7mm Xpress (left) Yes, it is a joke If it were fired the force would likely rip the copper jacket from the … Read a bit about it here. It supposedly set a a 2500m world record at one time. Now we get into our really big cartridges. You are bidding on a single .17 Incinerator aka .17/.50 BMG collector cartridge. While the Anzio 20/50 will be more powerful, it will also be more overbore then the 50 BMG and as stated above will be a barrel burner. They called it the "fat fifty". AR15.COM is the world’s largest firearm community and is a gathering place for firearm enthusiasts of all types. Any use of this content without express written consent is prohibited. It wwould be so badly overbore it wouldn't even be funny. Spanish Marines still believe in direct firepower. No need to swap extrator, Its still a 9mm. Report. The latter was originally designed for a pre-WW2 anti-tank rifle, but was soon diverted for possible aircraft machinegun applications. But I ask you, what kind of sniper needs/uses a crew? It was the package with the 9mm. Wouldn't that just squirt the lead out of the jacket? Dies and data are available. Reply. The .50 Browning Machine Gun (.50 BMG, 12.7×99mm NATO and designated as the 50 Browning by the C.I.P.) It uses 50% of the powder to get 88% of the velocity. A thought came to mind about possible necking down a .450 Bushmaster, .458 SOCOM, or .50 Beowulf to something in the 6.5mm to 7mm range. You can see the fibers running up and down. Your round sounds awesome, but I think it might be unnecessary. I heard of one a long time ago called the 50 Omni, 20mm necked to .50. EHans34 Private. There is a thread on here of a guy selling reamers, brass, barrels, and projectiles for a 20mm Vulcan necked down to 50 cal . The rifle also has the option for a handguard, a free-floating barrel, and an … SNAFU! the Marine Corps is looking at Sniper Teams of about 6 to 8 guys now. The more I read about this round the more excited I'm getting about it. Good job. The current 20x102mm round used by the M61 Vulcan was derived from a .60 caliber cartridge. I would imagine the tube life would be pretty short. A good while back, someone madeup a joke round starting with a 20mm case, then a .50 case soldered in it, then a .30-'06 case soldered into that, then a 22 Hornet case necked down to a phonograph needle. WOW.... the first Anti-train rifle. That 3,600 grain bullet is just massive — it weighs more than half a pound. It is also possible (through a lot of work), to use a 20mm cannon casing shortened and necked-down.The primer pocket is swaged out to accept a.50 cal machine gun primer. That's very un-sniper like.What would you use it for that current rifles/calibers don't already work? The .204 Ruger is based on the 222 Remington Magnum case, necked down to 20 Caliber. Dogtown ... What does anybody know about the 50-20mm or the big russian 14.5 x 114? .50 BMG necked down to .22. From left to right:.223, .338 lapua, 50BMG, 20MM Vulcan *This is a destructive device but can be purchased by licensed dealers or with paperwork similar to buying a tranferable machinegun or suppressor and by paying a $200 transfer tax. As the story goes, Johnson acquired a Winchester Model 86 in .50-110 with a bad barrel and decided to make a replacement for it from a military-surplus machine gun barrel in .50 BMG. caseing necked down. The US Army is currently using the 300 Win Mag. The .440 Cor-Bon is a large-caliber handgun cartridge.The Cor-Bon company produced the caliber bullet in 1998. Looked pretty impressive, but of course was not real. Because it’s a necked-down cartridge, it has less felt recoil than similarly-powered 50 AE loads. It would be like a "bullet hose" I've heard so much about.... None of those combos would  work. The problem. It is a 577 Snider case with a slight shoulder on it. Basically the projectile never can be pushed faster than the speed of sound in the gas. I did it as a joke at work one day. i'm laughing sooooo hard at the above post, i think i just wet myself.............. [ARCHIVED THREAD] - 20mm knecked down to .50, www.reloadbench.com/cartridges/w338223s.html, www.reloadbench.com/cartridges/w458x15barnes.html, www.reloadbench.com/cartridges/w458x2.html. i'll find it and post it here. The rifle is also available in 14.5mm and Anzio 20-50 calibers; The Anzio 20-50 is a round consisting of a 20mm case necked down to.50 caliber. https://www.ar15.com/forums/armory/20mm_knecked_down_to__50/2-179262 But the time it took the powder to burn made making shots tricky. Basically it is the 50 Alaskan case necked down to 44 caliber. To step a .50 BMG case down to .177, one would need four reamers to make three dies to step down the case neck (.50-.40-.30-.20-.17) along with four reamers to thin the case neck for every step down. barrel and spring. That is the limit of conventional firearms, in regards to velocity. Here is the McMillan .50 fatmac, it is a .50 round made from a necked down 20mm vulcan cannon shell. The cartridge is INERT as it is obviously a joke. Practically speaking that appears to be around 5,000 fps. bullet at 3,200 fps-3,600 fps) Titanium firing pin Optional weights and configurations. It has the same base dimension as the .50 round, so .50 rifles can be converted.Trivia: US 20x102mm is actually a necked out .60 machine gun round. The 20mm shell is about the same size as a 50BMG shell. The Rip-Stop fabric used in these tactical pants is excellent. They were originally made in 20mm, but to avoid the NFA registration as a destructive device and the $35-50 per round ammo cost, many guys have them converted to .50  Fired from such a massive gun, the recoil is negligible - like shooting a .22. Under STANAG 4383, it is a standard service cartridge for NATO forces as well as many non-NATO countries. You'd have to be a helluva man to handle a round like that. UPDATE: Thanks for all the info guys. I don't know what point it would be to do that. The rifle's lock time was worked on. Features the first revolver and automatic cartridges from the 1800s into the early 1900s from all over the world. Another 50 BMG based caliber is the 14.5mm JDJ, the case is opened up to allow the larger diameter bullet. Here is the front of the waist button snap fastener. The seating die can be made from the last forming die if one is making just one cartridge. In this case the biggest one is recoil. The bullet reached crazy velocities upwards of 4,500fps. SSK Ind. oh and the round that is a winner that BB1984 named is the 416. i saw the ballistics tables on that bad boy and i'm wondering why no one is using it for sniper work. This one is built on the Ruger #1 rifle. WOW! Posted by Solomon at 2/10/2013 05:44:00 PM Email This BlogThis! But rather than chamber the new barrel for the Winchester cartridge, he necked up the .450 Alaskan case to .50 caliber. Manufacturer: Anzio Ironworks Corporation (anzioironworks.com) Mike Remo Caliber: 20mm x102mm Service date: 2006 I've got a AR-50 and the recoil isn't bad at all, but I t'd be thinking twice about touching off that necked down 20mm in any type of rifle I could pick up! 20mm necked to .17 anyone? Powered by, Post Comments i'm talking about the boys at ATK or LaRue or some other big name taking a swing at it. Neck down a 20mm to .50? This a very easy thing to do so with the US 20x102mm M50 series cartridge used in the M61 Vulcan. Necked down 20mm to a 50 cal.. Why hasn't anyone necked down a 20mm to a 50 cal and developed the ultimate long range crew served sniper system? The 14.5 pushes a 1000 grain bullet at 3300 fps. Available in 14.5mm, 20mm, and new Anzio 20-50 calibers. Notice the Rip-Stop fabric. oh this wouldn't be something i could do at my reloading table. Why would you? 50 necked to 22, maybe a 20mm necked to 22. Reply. Skammy, my guess is what you saw was a Lahti anti-tank gun. I think I read about it in the FCSA magazine. I heard about this going on but thought it was just an old wives tale... General Dynamics MPF entry is undergoing Soldier testing...BAE's is missing in action...is this an easy win for GD?