A few seasons ago, Texas gunsmith Richard King built an impressive .50 BMG target rifle for a customer. Equipped with a beefy McMillan stock, this rig has delivered some very impressive accuracy. Check out that target shot during break-in. Using On Target software, we measured this 3-shot group at 0.476″ or 0.454 MOA. Not bad for a beast with VERY serious recoil. Do you think you could beat that 0.476″ with your AR15 shooting puny .223-caliber bullets?
Compare the dimensions of that massive 50-Cal action to a Rem 700 action in the middle. When you’re shooting a Fifty, size matters!
On Facebook, some folks were surprised a guy could wring that kind of accuracy out of a monster .50 BMG. One wag posted: “Yikes! He will need flinch therapy after shooting that beast.”
Another Facebooker joked: “When shooting a .50 BMG you say…In your best Crocodile Dundee voice…that’s not a gun, THIS is a gun!”
Richard King responded that this customer has quite a bit of experience with jumbo-caliber rifles: “Remember this is the guy that shot a .338 Lapua in a two-day F-Class match. Recoil might actually be easier on this 50, given the fact that it has more weight and a brake.”
Richard King showed us the monster 13-lb BAT action for this rifle at the 2018 Berger SWN. Honestly, the big BAT .50 BMG action was HUGE — with the bolt fully extended it was the size of your forearm (to the finger tips). Richard joked “This weighs almost as much as an F-TR rifle (before optic) all by itself”.
Specialty Tools for the Big .50 BMG
Yes, the .50 BMG is one huge cartridge. Thankfully, there are some special tools for loading the jumbo-size round. Giraud Tool produces a specialty comparator for the 50-Cal cartridge. The double-ended .50 BMG comparator is quite versatile. In one orientation you can measure base-to-ogive bullet length and also measure cartridge OAL from rim to bullet ogive. When reversed, you can use the comparator to measure cartridge headspace. Priced at $33.00, Giraud 50 BMG Comparator gauge is constructed of 303 stainless and fits most any vernier, dial, or digital caliper. CLICK HERE for more info.
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Fans of Heavy Artillery should visit Fifty Caliber Shooters Association (FCSA) website. There you’ll find range maps, photo collections and animated slide-shows On the FCSA photo gallery page, you’ll find a map. Click on any gray range link to see images from that venue. There are also a series of articles covering FCSA competition along with the “care and feeding” of the big 50-caliber rifles.
For today’s Sunday GunDay feature we offer a short history of the legendary .50 BMG cartridge, along with some fun photos from FCSA matches in the Western USA.
About the .50 BMG Cartridge
The .50 Browning Machine Gun (.50 BMG, aka 12.7×99mm NATO or 50 Browning) is a cartridge developed for the Browning .50 caliber machine gun in the late 1910s, entering official service in 1921. Under STANAG 4383, it is a standard cartridge for NATO forces as well as many non-NATO countries.
John Browning had the idea for this round during World War I in response to a need for an anti-aircraft weapon, based on a scaled-up .30-06 Springfield design, used in a machine gun based on a scaled-up M1919/M1917 design that Browning had initially developed around 1900. According to the American Rifleman: “The Browning .50 originated in the Great War. American interest in an armor-piercing cartridge was influenced by the marginal French 11 mm design, prompting U.S. Army Ordnance officers to consult Browning. They wanted a heavy projectile at 2700 FPS, but the ammunition did not exist. Browning pondered the situation and, according to his son John, replied, ‘Well, the cartridge sounds pretty good to start. You make up some cartridges and we’ll do some shooting’.”
Are you a died-in-the-wool .50 BMG fan? Got a hankerin’ for heavy artillery? Then visit the FCSA Photo Gallery page. There you’ll find hundreds of photos from Fifty Caliber Shooting Association (FCSA) matches and 50 Cal fun shoots in eleven states plus Australia, Switzerland, and the United Kingdom. To access the photos from the Gallery Page, start by selecting a state/country and then click on the colored buttons for the event date (e.g. 2015-04).
Photo sets go all the way back to 2002, so you can see the evolution of the hardware over the years. Sample multiple archives to see the differences in terrain from one range to another — from Raton’s alpine setting to the hot, dry Nevada desert. This Gallery is really a treasure-trove of .50-Cal history. Here are a few sample images.
Reloading Powder and Special Tools for .50 BMG
Alliant’s Powder for 50-Caliber Applications
In 2009 Alliant unveiled Reloder 50, a slow-burn-rate powder designed primarily for long-range, .50-caliber rifle shooters. According to Alliant, the burn rate is “a little slower than Winchester 860″ and the powder is showing excellent lot-to-lot consistency. Load density is optimized for the 50 BMG and similar cases. Like Reloder 17, Reloder 50 employs a process which penetrates the kernels with the burn-rate-controlling chemical. This should allow a longer, flatter pressure curve, yielding more velocity than conventional powders can deliver. Alliant says that Reloder 50 offers “superior velocity and the ability to burn cleaner (with less residue)”. Reloder 50 comes in both 1-lb (#150527) and 8-lb (#150528) containers.
Forster and Lyman .50 BMG Trimmers
Big Fifty enthusiasts asked for a dedicated .50 BMG case trimmer, so Forster and Lyman created .50 Cal trimmers specifically for that cartridge. Forster’s cutter tip on its .50 BMG Case Trimmer is much sharper than the cutter on the Lyman 50 Cal AccuTrimmer. However, with the Forster tool you will pay more for that superior cutting ability — the Forster .50 BMG trimmer is $95.53 at Midsouth compared to $75.09 at Midsouth for the Lyman .50 BMG trimmer. Go head and pay the extra money for the Forster — the cutter head is much sharper, and we prefer the Forster’s collet-style case-holder. Bottom line — the Forster gets the job done more quickly, with less effort.
Giraud .50 BMG Case/Bullet Comparator Giraud Tool makes a comparator for 50-Cal cartridges. The double-ended comparator is quite versatile. In one orientation you can measure base-to-ogive bullet length and also measure cartridge OAL from rim to bullet ogive. When reversed, you can use the comparator to measure cartridge headspace. The $33.00 Giraud .50 BMG Comparator gauge is constructed of 303 stainless and fits most any vernier, dial, or digital caliper. CLICK HERE for more info.
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This is one amazing .50-caliber rifle. Along with the lever-actuated falling block, it has a massive swing-out breech block like you’d find on a field artillery piece. The action is so wide that the sights and scope are offset. You’ve heard of the “Beauty and the Beast”? Well here the Beast IS a Beauty….
View looking down at the action from above. Note the hinged Breech-Block.
This extraordinary example of gunsmithing art was crafted by the late J.T. (Jack) Smith of Sudbury, Massachusetts. This unique .50-caliber rifle features an aircraft machine gun barrel cut down to 38-1/4″, and turned octagon to round (in the style of Schuetzen rifles). The round portion of the barrel is tapered with a heavy boss at the muzzle. The barrel is inlaid in gold on both left and right side top flats. Custom scope bases are fitted to the receiver and to the top of the barrel. These hold an externally adjusting Unertl 15X target scope in offset scope mounts.
Huge Falling Block Receiver
The massive receiver (8″ long x 2-3/4″ wide x 3″ deep) is remarkable in design and construction. Machined from solid steel, the action incorporates several unique features. Note the hinged Howitzer-style breech block which swings to the right and mortises into the back of the receiver in the loading slot, providing a back-up for the falling block. We’ve never seen anything like that on any rifle. The one-piece floorplate/lever incorporates a Ruger No. 1-style latch which locks into the bottom of the trigger guard. The entire floorplate and lever retract downward. Firing is accomplished by means of a striker mounted in the hinged (swing-out) breech block. This is manually cocked with another lever on top of the breech block. Dropping the falling block activates the extractor which removes the spent case.
Offset Sights
This rifle features a custom-built, windage-adjustable offset front sight plus a custom-built vernier tang sight with aperture offset to the left side. The sights are offset to the left for a right-handed shooter, to correct for the extreme width of the receiver, allowing a more comfortable head position.
In the world of varmint cartridges, it’s all about speed. Higher velocity delivers flatter trajectories, and more dramatic impacts on critters. To achieve higher speeds, handloaders have experimented with many extreme wildcats — big cases necked down to a smaller calibers. Here we present what may be the most extreme wildcat cartridge of all, the .17 Incinerator — a .50 BMG necked down to .17 caliber. Created by Ammo-One, a custom cartridge company, the .17 Incinerator offers blistering performance. The special lathe-turned 33gr projectiles* exit the barrel at 5883 Feet Per Second — that’s over Mach 5, five times the speed of sound!
Mach 5 is 3836.35 mph at sea level, which equates to 5626.64 Feet Per Second (FPS). The remarkable .17 Incinerator achieves this stunning velocity by burning over 230 grains of powder in a highly modified .50 BMG case. The velocity of this cartridge (still well over Mach 5 at 100 yards) delivers an incredible amount of energy on target. A hit literally vaporizes a varmint, as you can see from the image below.
It takes a special barrel to shoot the .17 Incinerator. Kent Wilson of Ammo-One, who helped develop this extreme wildcat, explains: “The speeds are so great we had to use a custom 3-groove, polygonal-rifling 1:20″-twist barrel to keep the bullets from disintegrating on launch. The polygonal land/groove geometry reduces bullet engraving, which also helps keep the bullets in one piece. Also we must use solids — regular jacketed bullets can’t handle these speeds”.
Even More Speed — the .17 Incinerator Improved
While the .17 Incinerator is commercially available, there is an even more extreme “Improved” version of this case, with a radical 50-degree shoulder that yields even greater case capacity. The .17 Incinerator Improved (17 IN-IMP), shown below, can hold 20 grains more powder, promising velocities approaching Mach 5.5 or 6189.3 FPS. Now that’s really cookin’!
*Because of the ultra-high velocity generated by the .17 Incinerator, solid bullets must be used. Conventional jacketed projectiles would disintegrate before they reached the target.
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In October 2015, the legendary Jerry Miculek won the Trijicon Shooting Challenge at the Rockcastle Shooting Center. That impressive victory earned Jerry big bucks — a $50,000 grand prize. By any measure, that’s some serious cash — mucho dinero.
To celebrate his October Trijicon Challenge victory, Jerry Miculek decided to do some pumpkin carving — with a .50 BMG Barrett rifle.
Shooting the 30-lb rifle off-hand, Jerry blasted some serious holes in Mr. Pumpkin. Needless to say, the results were dramatic, if somewhat messy. Advancing the science of terminal ballistics, Jerry (not surprisingly) confirmed that “the 663-grain bullet did manage to penetrate the pumpkin all the way.”
Jerry Miculek earned $50,000 as the winner of the 2015 Trijicon Challenge.
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Is The Challenge Of Big Bore Extreme Range Shooting Right For You? By James Patterson
This article originally written for the Sinclair Reloading Press
Handling a .50 BMG Rig
Is a .50 BMG caliber rifle difficult to shoot? Not at all. The relatively heavy weight of a standard rifle at 30 pounds or more combined with a very efficient muzzle brake makes it a pleasure to shoot. The typical recoil can be compared to a .243 rifle or a 12 gauge trap load. On the other hand, the burning of a typical load of 230 grains of powder combined with that muzzle brake makes the muzzle blast experience exhilarating. A first time shooter will fire, pause for a moment in awe at the muzzle blast, and then break out into what has become known as “The 50 Caliber Grin”, almost impossible to wipe from ones face. My daughter started competing with the .50 BMG at 18 (115 lbs of tall skinny girl) and happily shoots 100+ rounds in the course of a match, her grin on the last round is as wide as on the first! Many members and competitors in the FCSA are women and many have distinguished themselves as excellent marksman having set world records on numerous occasions.
Cost of Big-Bore Shooting
Is owning and shooting a .50 BMG caliber rifle expensive? Relatively speaking yes, but one must put it into perspective. Rifles may run from $2500 to $7000, maybe even more for a top of the line custom rifle. A good scope will set you back $1000 to $3500. And while excellent commercial ammo is made, it is hard to find these days and runs from $4 to $6 a round. Most serious shooters start reloading for the rifle as soon as practical, not only for the economics of reloading but also for the ability to fine tune custom ammo for their specific rifle. It’s a very rare match that is won shooting commercial ammo. I recently compared the cost of my hobby — owning, shooting, and competing with the 50 BMG — with a friend whose hobby is snowmobiling. Factoring in the cost of equipment, licensing, gasoline, clothing, etc. it was soon obvious that my hobby was significantly less expensive than his.
Getting Started So how does one get started? You could do as I did, purchase a rifle not knowing what you were really getting into; or you could come out to a FCSA-sponsored event, shoot a number of different rifles, rub shoulders with those who have already taken the plunge, and see if this sport is right for you. While membership in the Fifty Caliber Shooters Association (FSCA) is required to compete at a FSCA event, membership is not required to come and experience first hand what is going on. If you have any inclination that you are interested in the extreme sport of long rang, big bore shooting then a year’s membership in the FCSA is only $60 ($20 for active duty military) a significant bargain if it helps you make just one well-informed equipment choice. In addition one of the primary functions of the FCSA is helping to identify active members near you who can help you understand just what is involved and help you ‘get your feet wet’ in this challenging sport.
This Armalite AR-50A1 .50 BMG rifle was modified by G.A. Precision.
If you’re a fan of big boomers, and love shooting steel, then definitely watch this Wide Open Magazine video. This covers a .50 BMG build by our friends at G.A. Precision (GAP). The rifle started as an Armalite AR-50A1 ($3359.00 MSRP). Then GAP fluted the barrel and swapped the factory muzzle brake with a more compact brake from American Precision Arms*. Then, as modified, the entire rig was given a rugged Cerakote finish.
The video has nice background music, great aerial drone footage, and of course some serious firepower. Using Hornady .50 BMG ammo, GA Precision’s George Gardner and his Wide Open friends shoot the big Fifty from the bench as well as prone. Enjoy!
About the .50 BMG Cartridge
The .50 Browning Machine Gun (.50 BMG, aka 12.7×99mm NATO or 50 Browning) is a cartridge developed for the Browning .50 caliber machine gun in the late 1910s, entering official service in 1921. Under STANAG 4383, it is a standard cartridge for NATO forces as well as many non-NATO countries.
John Browning had the idea for this round during World War I in response to a need for an anti-aircraft weapon, based on a scaled-up .30-06 Springfield design, used in a machine gun based on a scaled-up M1919/M1917 design that Browning had initially developed around 1900. According to the American Rifleman: “The Browning .50 originated in the Great War. American interest in an armor-piercing cartridge was influenced by the marginal French 11 mm design, prompting U.S. Army Ordnance officers to consult Browning. They wanted a heavy projectile at 2700 FPS, but the ammunition did not exist. Browning pondered the situation and, according to his son John, replied, ‘Well, the cartridge sounds pretty good to start. You make up some cartridges and we’ll do some shooting’.”
* In the video, George mistakenly says “American Patriot Arms”, but the brake is made by Georgia-based American Precision Arms.
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Got four-and-half grand to burn? Looking for a new rifle that will impress your buddies at the range? Then check out Remington’s updated .50 BMG rifle, the R2Mi. In appearance, it sort of looks like an AR10 on steroids. But this thing is massive. It weighs about 30 pounds and has a 30″ Walther barrel. Though it may look like a semi-auto in the photo, this is a LEFT Bolt, Right port bolt-action gun.
GunsAmerica Digest says the R2Mi is based on the Bushmaster BA50: “The R2Mi has upper and lower receivers that follow the basic design of AR-pattern rifles, but it is a manually operated bolt-action rifle with a left-side charging handle that works the bolt carrier directly. The upper receiver is railed like most modern AR rifles as a scope mount. The R2Mi comes standard with a Lothar Walther 30″ barrel with a 1:15″-twist and a free-floating railed handguard that serves as an accessory mount for low light optics and other accessories along with the included folding steel bipod.”
For the hefty investment ($4599.00 MSRP, $3999.00 Street Price), at least Remington tosses in some good gear. The R2Mi ships in a big Pelican Storm transport case, and comes complete with a bipod, two 10-round magazines, eye protection, ear protection, and cable lock. Those accessories are worth $450.00 or so.
The Remington R2Mi is closely related to the Bushmaster BA50*, shown in this video:
The R2Mi is fitted with a Magpul PRS Gen 3 stock and ErgoGrip Deluxe Tactical pistol grip. If you want to change out those components, the R2Mi is compatible with various AR components including grips and stocks. The controls are similar to AR controls including the selector lever and magazine release.
Here is Remington’s product description: “The free-floated barrel, with 1:15″ twist and 8-groove rifling is perfectly suited for harnessing sub-MOA accuracy from the .50 BMG. And its left-hand operated, right-hand eject bolt-action and 10-round box magazine, ensure comfortable cycling with no need for the shooter to adjust position. The R2Mi is also one of the simplest .50-caliber rifles to assemble and maintain. Its upper receiver locks to the lower receiver with two integral pins, and its full-length Picatinny rail accommodates a wide range of optics.”
Remington R2Mi Features:
• Left Bolt, Right Port Action
• Billet Aluminum Lower Receiver
• Compatible with AR Accessories
• AAC Cyclops Muzzle brake
• Ships with Steel Folding Bipod
• AR-type Take-down for maintenance
Price is Hefty — MSRP is $4599.00
Is this a good value? It depends — this is a mag-fed rifle, with some interesting features. But $4599.00 is still a steep price for a rifle that is not an everyday shooter. On the other hand GunsAmerica states: “It can be very expensive to shoot .50 BMG and many repeating rifles chambered for the round can cost thousands more. The MSRP for the R2MI is only a little more than what some single-shot .50s cost, which means this rifle has a good value.”
* The BA50 was the original design of Cobb Manufacturing. Bushmaster purchased the design, upgraded some features, and released the rifle as the Bushmaster BA50. This bolt-action, magazine-fed .50 BMG rifle featured a 22″ or 30″ Lothar Walther free-floating barrel with a 1:15″-twist rate. Bushmaster claimed the BA50 was capable of shooting 1 Minute of Angle (MOA) groups with M33 ball ammunition.
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This 50 Cal Days of Christmas video features some fantastic slow-motion footage of a Barrett .50 Caliber M82. This bad boy pumps out some serious muzzle flash. Watch carefully at the 1:05 mark and you can see the .50-caliber projectile exit the muzzle brake and spin through the ball of smoke and flame. For best viewing, you may want to change your video settings to 720p or 1080p High Definition and view full-screen (using the video controls).
The video carries “overkill” to the max, as the shooter uses his big Barrett to blast Christmas ornaments and a snow-globe. To top things off, at the 2:50 mark, the shooter fires the .50 cal at a pyro-equipped gingerbread house. (The gingerbread shot is taken from a standing hold no less!) The results (at 3:22) are impressive — gingerbread house becomes flaming gingerbread pudding.
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In the ELR game, particularly the King of 2 Miles (KO2M), it’s “go big or go home”. The top shooters run large-capacity cartridges that push large-caliber, ultra-high BC bullets at very high velocities. Bullets launched by cartridges such as the .416 Barrett can sustain supersonic velocities at Extreme Long Ranges — and that’s what it takes to win. The .416 Barrett can launch a 550-grain solid bullet at 3000+ FPS.
Photo from ELR Competitor Corbin Shell.
2018 and 2019 Kings of 2 Miles Loaded on RCBS Presses
So how do you load jumbo cartridges such as the .416 Barrett? It takes a big, heavy, super-strong reloading press. We’ve learned that the last two Kings of 2 Miles, Paul Phillips (2019) and Robert Brantley (2018) both loaded their KO2M ammo on RCBS AmmoMaster .50 BMG presses. Phillips loaded .416 Barrett ammo, while Brantley loaded custom .416 MCS rounds.
In 2018, Robert Brantley topped the field using his custom .416 MCS loads perfected on the AmmoMaster .50 BMG Press. The next year, Brantley took a close second to 2019 KO2M winner Paul Phillips. Both Phillips and Brantley use the AmmoMaster .50 BMG single stage press kit and RCBS .416 Barrett dies to hand-load for extreme long-range. “My ammo has been much more consistent after switching to the RCBS press and dies,” remarked Phillips, who runs the Global Precision Group. Brantley said he uses RCBS products for most of his reloading needs — from the dies and AmmoMaster, to the ChargeMaster and Brass Boss. His custom .416 MCS loads launch a 550-grain bullet more than 3,100 fps.
The KO2M competition is a two-day extreme long-range (ELR) match held at the NRA Whittington Center in New Mexico. Teams consist of one shooter and up to two wind coaches/spotters, who fire on steel targets ranging from about 1,500 to 3,500 yards. The photo below show 2019 Winner Phillips with the King’s crown at the NRA Whittington Center in Raton, NM.
Loading with RCBS AmmoMaster .50 BMG Press
This video shows reloading with the RCBS AmmoMaster .50 BMG press. While this video shows .50 BMG cases being loaded, the principles are the same for loading the .416 Barrett used by both Brantley and Phillips. Big cases need big presses!
RCBS is a leading manufacturer of ammunition reloading equipment for rifles and pistols, offering reloading equipment throughout the world. For more information, visit www.RCBS.com
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This Armalite AR-50A1 .50 BMG rifle was modified by G.A. Precision.
If you’re a fan of big boomers, and love shooting steel, then definitely watch this Wide Open Magazine video. This covers a .50 BMG build by our friends at G.A. Precision (GAP). The rifle started as an Armalite AR-50A1 ($3359.00 MSRP). Then GAP fluted the barrel and swapped the factory muzzle brake with a more compact brake from American Precision Arms*. Then, as modified, the entire rig was given a rugged Cerakote finish.
The video has nice background music, great aerial drone footage, and of course some serious firepower. Using Hornady .50 BMG ammo, GA Precision’s George Gardner and his Wide Open friends shoot the big Fifty from the bench as well as prone. Enjoy!
About the .50 BMG Cartridge
The .50 Browning Machine Gun (.50 BMG, aka 12.7×99mm NATO or 50 Browning) is a cartridge developed for the Browning .50 caliber machine gun in the late 1910s, entering official service in 1921. Under STANAG 4383, it is a standard cartridge for NATO forces as well as many non-NATO countries.
John Browning had the idea for this round during World War I in response to a need for an anti-aircraft weapon, based on a scaled-up .30-06 Springfield design, used in a machine gun based on a scaled-up M1919/M1917 design that Browning had initially developed around 1900. According to the American Rifleman: “The Browning .50 originated in the Great War. American interest in an armor-piercing cartridge was influenced by the marginal French 11 mm design, prompting U.S. Army Ordnance officers to consult Browning. They wanted a heavy projectile at 2700 FPS, but the ammunition did not exist. Browning pondered the situation and, according to his son John, replied, ‘Well, the cartridge sounds pretty good to start. You make up some cartridges and we’ll do some shooting’.”
* In the video, George mistakenly says “American Patriot Arms”, but the brake is made by Georgia-based American Precision Arms.
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This is one amazing .50-caliber rifle. Along with the lever-actuated falling block, it has a massive swing-out breech block like you’d find on a field artillery piece. The action is so wide that the sights and scope are offset. You’ve heard of the “Beauty and the Beast”? Well here the Beast IS a Beauty….
View looking down at the action from above. Note the hinged Breech-Block.
This extraordinary example of gunsmithing art was crafted by the late J.T. (Jack) Smith of Sudbury, Massachusetts. This unique .50-caliber rifle features an aircraft machine gun barrel cut down to 38-1/4″, and turned octagon to round (in the style of Schuetzen rifles). The round portion of the barrel is tapered with a heavy boss at the muzzle. The barrel is inlaid in gold on both left and right side top flats. Custom scope bases are fitted to the receiver and to the top of the barrel. These hold an externally adjusting Unertl 15X target scope in offset scope mounts.
Huge Falling Block Receiver
The massive receiver (8″ long x 2-3/4″ wide x 3″ deep) is remarkable in design and construction. Machined from solid steel, the action incorporates several unique features. Note the hinged Howitzer-style breech block which swings to the right and mortises into the back of the receiver in the loading slot, providing a back-up for the falling block. We’ve never seen anything like that on any rifle. The one-piece floorplate/lever incorporates a Ruger No. 1-style latch which locks into the bottom of the trigger guard. The entire floorplate and lever retract downward. Firing is accomplished by means of a striker mounted in the hinged (swing-out) breech block. This is manually cocked with another lever on top of the breech block. Dropping the falling block activates the extractor which removes the spent case.
Offset Sights
This rifle features a custom-built, windage-adjustable offset front sight plus a custom-built vernier tang sight with aperture offset to the left side. The sights are offset to the left for a right-handed shooter, to correct for the extreme width of the receiver, allowing a more comfortable head position.
Fans of Heavy Artillery should visit 
Alliant’s Powder for 50-Caliber Applications
