Our friend, Texas gunsmith Richard King, recently posted some images of a new .50 BMG target rifle he built for a customer. Equipped with a beefy McMillan stock, this rig has shown some impressive accuracy — even during break-in. Check out that target. Using On Target software, we measured this 3-shot group at 0.476″ or 0.454 MOA. Not bad for a beast with some 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.”
Before this rifle was completed, Richard King showed us the monster 13-lb BAT action 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 makes a specialty 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 Giraud 50 BMG Comparator gauge is constructed of 303 stainless and fits most any vernier, dial, or digital caliper. CLICK HERE for more info.
Editor: Many new barrels will deliver higher velocities with the same load after 100-150 rounds through the bore. The exact reasons for this speed-up are not 100% certain, and velocity increases (if any) will vary from one barrel to the next. But this “speeding up” phenomenon is common, so be prepared if this happens with your next barrel. If you do experience a significant velocity increase you should probably re-tune your load AFTER the velocity stabilizes at the higher level.
From the Sierra Bullets Blog Article by Mark Walker, Sierra New Product Development Director
In a previous post, I discussed a couple of methods to tune a load to your barrel to help achieve the best accuracy possible. People most often work on load tuning if they get a new rifle or have a different barrel installed. In both instances, the barrel is new and has not been fired very much. According to most competitive shooters, this is the most accurate your barrel will ever be, so getting it tuned and shooting accurately is a priority.
The Speed Up Phenomenon After 100-150 Rounds
Even though after you work up a load and your new barrel is shooting great, a lot of shooters notice that at around 100 to 150 rounds their rifle may stop shooting as accurately. I had this happen to a rifle and I was confused as to why something that worked so well to begin with would all of a sudden quit shooting. I decided to break out the chronograph to do another load work up to see what was going on. To my surprise, the velocity had increased around 80 fps over the original velocity! After performing another ladder test and adjusting the seating depth, the rifle was once again shooting well.
There are several thoughts on why this may happen, however, you can rest assured that it does happen. One thought is that as the barrel breaks in, the tooling marks in the throat of the chamber smooth out and allow less resistance to the bullet as it exits the bore thereby increasing speed. Another idea is that the throat area starts to get a little rough which in turn causes more resistance which increases pressure and therefore more velocity. I’m sure there are some out there who have a better understanding as to why this happens, but it can definitely affect the accuracy of your rifle. So be aware and never be afraid to rework a load to keep your rifle in tune.
Experts Confirm That Barrel Speed-Up Is Common Two respected shooters have observed an increase in velocity with new barrels, typically after 100 rounds. Gunsmith and Hall-of-Fame benchrest shooter Thomas “Speedy” Gonzalez has documented barrel speed-up with testing. Moreover, Speedy’s bore-scope barrel inspections revealed a smoothing of the barrel lands. Jim See, a top PRS competitor, has encountered barrel speed-up many times. Accordingly, he re-tunes his load at 150 rounds.
“Alex Lipworth and I documented this phenomenon about four years ago and I have told all my customers about this. My son Mikee would shoot 100 rounds through all new barrels we planned on shooting before we would begin to do load development. We had a shooting snail that caught all the bullets set up in front of an indoor bench. We called it a wear-in process because upon careful examination of the bore when the ‘Speed Up’ takes place the cut-rifled bore resembles that more of a button-rifled barrels with the lands taking on more the softer look of a buttoned bore.” — Speedy Gonzalez
“Seen it [barrel velocity increase] too many times to count. All my match barrels get a ‘generic round’ loaded for them, which has worked well in barrels historically. After I hit 150 rounds I fine-tune the load and never look back, until the tube starts to slow down at it’s life end.” — Jim See
Well folks, it’s almost July — the means we’re moving into “peak heat” summer conditions. It’s vitally important to keep your ammo at “normal” temps during the hot summer months. Even if you use “temp-insensitive” powders, studies suggest that pressures can still rise dramatically when the entire cartridge gets hot, possibly because of primer heating. It’s smart to keep your loaded ammo in an insulated storage unit, possibly with a Blue Ice Cool Pak if you expect it to get quite hot. Don’t leave your ammo in the car or truck — temps can exceed 140° in a vehicle parked in the sun.
To learn more about how ambient temperature (and primer choice) affect pressures (and hence velocities) you should read the article Pressure Factors: How Temperature, Powder, and Primer Affect Pressure by Denton Bramwell. In that article, the author uses a pressure trace instrument to analyze how temperature affects ammo performance. Bramwell’s tests yielded some fascinating results.
For example, barrel temperature was a key factor: “Both barrel temperature and powder temperature are important variables, and they are not the same variable. If you fail to take barrel temperature into account while doing pressure testing, your test results will be very significantly affected. The effect of barrel temperature is around 204 PSI per F° for the Varget load. If you’re not controlling barrel temperature, you about as well might not bother controlling powder temperature, either. In the cases investigated, barrel temperature is a much stronger variable than powder temperature.”
Temp Strips allow shooters to monitor their barrel temperature. Excessive barrel heat can raise load pressures as well as shorten barrel life!
There is a new, ultra-high performance 7mm projectile for F-Open and long-range competitors. Berger has introduced a new 184gr F-Open Hybrid Target bullet, which will be the official 7mm bullet of the U.S. F-Open Rifle Team. The new 184-grainer is an advancement over previous 7mm match bullets. As you can see above, the new bullet is longer and sleeker than Berger’s existing 180gr Hybrid Target bullet. The new design gives the 184gr F-Open Hybrid impressive 0.695 G1 and 0.356 G7 Ballistic Coefficients. Compare that to 0.680 G1 and 0.349 G7 for Berger’s 180gr Target Hybrid bullet.
Bryan Litz of Applied Ballistics designed the new 184gr F-Open Hybrid to be slightly heavier, slightly longer, and have a more aggressive ogive shape. This gives the new 184-grainer a ballistic advantage over Berger’s existing 7mm 180gr Hybrid and VLD Target bullet designs. This bullet complements the .30 Cal 200.20X Hybrid Target bullet that was released last year in collaboration with the U.S. F-TR Rifle Team. As with that 200.20X bullet, for the new 184gr F-Open Hybrid, Berger took a successful, existing design and optimized the ballistic profile to make it even better. Along with .284 Win and 7mm SAUM used by F-Open shooters, this bullet should work well in a variety of 7mm cartridges.
New 184gr Hybrid Bullet Tested Extensively by U.S. F-Open Rifle Team
The U.S. F-Open Rifle Team tested the 184gr F-Open Hybrids thoroughly to ensure that they performed as well on target as they did in theory. The results were very positive, and this bullet has been adopted as the official 7mm bullet for the U.S. F-Open team. “The United States Rifle Team 2021 F-Open is extremely excited about the release of the new Berger 184gr F-Open Hybrid. Many members have tested the prototype bullets with outstanding success,” says Dan Bramley, Team Captain.
Note: On the Berger website, Berger lists a recommended 1:8″-twist rate for this new bullet. However, in its June 25, 2018 product announcement, Berger states the Minimum Twist Rate is 1:9″. MSRP is $61.99 per 100-ct box, Berger Part #28408. Grafs.com price is $54.99/box.
Berger says the bullet, which should be available very soon, will work in a variety of 7mm cartridges including: 7mm-08 Rem, .284 Win (and .284 IMP), 7mm SAUM, 7mm RUM, and 7mm Rem Mag.
Berger Supports U.S. F-Open Team — $1.00 Per Box
Berger states: “F-Class is one of the fastest growing precision rifle shooting disciplines, requiring the very best precision and accuracy to compete at the top levels. Berger has always been dedicated to making the very best bullets for our shooters. To help support the U.S. F-Open Team, Berger Bullets will donate $1.00 for every box of 7mm 184gr F-Open Hybrid bullets sold towards U.S. Team expenses for the upcoming 2021 F-Class World Championships in South Africa.”
Winchester just unveiled a completely updated website at Winchester.com. The new, mobile-friendly website offers comprehensive information on Winchester ammunition. In addition, the upgraded Winchester website now boasts a full-featured, interactive Ballistics Calculator which runs on web browsers as well as mobile Apps. This new Ballistics Calculator offers an innovative “Shooter’s Eye View”, shown above. You can change the magnification level on the “scope”, and adjust variables (such as temp and range) using the red sliders. Try it out — it’s fascinating to see how the calculated Point of Impact moves as you adjust the sliders.
NEW Winchester Ballistic Calculator Features:
— Calculator provides precise trajectory for hundreds of cartridge types and bullet weights
— Calculator includes library of Ballistic Coefficients.
— Calculator offers visual graphs showing trajectories — with calculated point of impact as well as trajectory curve chart.
— Calculator variables include sight-in range, target range, air temperature, crosswind speed, sight height, and elevation.
— Calculator offers side-by-side comparisons among five separate rounds.
— Calculator offers detailed statistics chart for fine-tuning your shooting.
— Calculator can print handy, small Drop Chart you can attach to your rifle.
The Winchester Ballistic Calculator is available as a free download for iPhone and iPad through the Apple iOs app store, and for Android phones and tablets through Google Play.
At the request of our readers, we provide select “Deals of the Week”. Every Monday morning we offer our Best Bargain selections. Here are some of the best deals on firearms, hardware, reloading components, optics, and shooting accessories. Be aware that sale prices are subject to change, and once clearance inventory is sold, it’s gone for good. You snooze you lose.
1. Brownells — Howa KRG Bravo 1500, 6.5 Creedmoor, $999.99
You could actually win a PRS match with this rifle, a Howa KRG Bravo rig in 6.5 Creedmoor. Yet, at $999.99, this KRG Bravo is one-third to one-forth the price of custom tactical rigs (less optics). This Howa was chosen as the official factory rifle for the National Rifle League (NRL), and we can understand why. With the KRG Bravo, you get a complete rig with a smooth-running action, nice two-stage trigger, AICS mag compatibility, good ergonomics, and competitive accuracy — all for less than you’d spend for a custom tactical action by itself. The polymer KRG stock features an aluminum internal sub-chassis. NOTE: Brownells also sells a KRG Bravo 6.5 CM rifle with a 26″ barrel for $1127.99. Both 24″ and 26″ lengths will shoot well, but the 26″ should deliver about 30 FPS more velocity. It’s really a matter of your budget and personal preference.
Here’s a killer deal on a Front Focal Plane (FFP) optic good for PRS competition and tactical applications. The Vortex Viper PST 6-24x50mm scope features 0.1 Milrad clicks with an EBR-2C illuminated reticle with Mil-based hash marks. This reticle also features the “Christmas Tree” type lower half, which provides range hold-overs with horizontal markings for wind holds. Not that long ago, this scope sold for around a thousand bucks. Now you can get the Vortex Viper PST 6-24x50mm for just $619.99. That’s a great price for a PRS-ready FFP comp scope with a proven track record and rock-solid Vortex warranty. This price is for Pre-Orders, with inventory coming soon. EuroOptic’s Sale price is $649.99. Use Code POVIPER during check-out to save another $30.00.
2. Midsouth — $2 Per Pound Rebate on Alliant Powders
If you are looking for popular Alliant powders, now’s a good time to buy. Midsouth Shooters Supply has discounted its inventory of Alliant powders, plus there is a $2 per pound factory rebate. So, for example, the sale price might be $1.50 off regular retail, and then Alliant gives you another $2.00 back for every pound you buy (up to 10 pounds or $20 total rebate). But act soon — this Powder Promotion ends June 30, 2018.
4. Brownells — Howa 1500 Barreled Actions, Starting at $259.99
Howa makes excellent, smooth-running actions, and the Howa HACT 2-stage trigger is WAY better than most domestic factory triggers. Right now you can save big bucks on Howa 1500 barreled actions, complete with HACT trigger and trigger-guard, starting at $259.99. Both regular actions and Mini Actions are offered. Available chamberings include 6.5 Grendel, 6.5 Creedmoor (back-ordered), 7.62×39, .308 Winchester, and .300 Win Mag. Some of these barreled actions come with a rugged Cerakote finish, while others have a blued finish. You can also get FREE Shipping with Code MDV during checkout. Here is a partial list of the Howa 1500 barreled actions available:
.223 Rem, 20″ Heavy Barrel, $399.99
6.5 Grendel, Mini Heavy Barrel, $389.99
6.5 Creedmoor, 24″ Heavy Barrel, $399.99
6.5 Creedmoor, 26″ Heavy Barrel, $429.99
7mm-08, Std Cerakote, $579.99
7.62×39, Mini Light Barrel, $259.99
.308 Win, 20″ Heavy Barrel, $289.99
.308 Win, 24″ Heavy Barrel, $299.99
.30-06 Sprg, 22″ Sporter Barrel, Cerakote, $349.99
.300 Win Mag, 24″ Heavy Barrel, $279.99
5. Natchez — Surplus SKB 5041 Transport Cases, $105.99
Natchez has obtained a supply of British MOD Surplus SKB 5041 rifle cases. These were ordered as mine detector cases, but were never issued. Natchez has removed the foam cut for the detectors and replaced it with brand new 2-piece convoluted foam. Interior dimension of the case is 50″x14.5″x5″ INSIDE so this will hold long-barrel match rifles comfortably. These are extremely high-quality cases, very tough and rugged, waterproof with gaskets. These cases feature four SKB patented trigger latches, four reinforced padlock locations, and inline wheels. Though in excellent condition, some case may have minor exterior scuffs. You won’t find a better case at anywhere near the $105.99 price. These normally retail for $199.99.
6. Amazon — RCBS ChargeMaster Lite, $186.99
Need a good, modern electronic scale/dispenser? The modern ChargeMaster Lite offers good performance for the price — now $186.99 at Amazon and $187.49 Brownells. But at Brownells, with Code NCS you can get $15 off and free shipping — lowering your net cost to $172.49! That’s a killer deal — other retailers are charging up to $260.00 for this machine. Once calibrated, we found the ChargeMaster Lite’s dispensing to be very accurate. RCBS claims +/-0.1 grain. This newer machine is a bit easier to program than the original ChargeMaster. Verified purchasers have been happy, but with one complaint: “You cannot turn off the beeping. The [original ChargeMaster] has a way to mute the beeping. This one does not.” Take note.
Right now you can order the 36-power Weaver T-Series XR scope for just $389.99. That’s an awesome, but act quick — this price could change. Natchez currently has the silver 36x40mm Weaver XR for just $389.99 — a fantastic price. 36X is enough power for benchrest competition. And even if you don’t shoot benchrest, this is a great scope for load development or general accuracy testing. The 36-power T-Series scopes have a 40mm front objective and side-focus parallax control. You can also get this XR 36X scope in black for $439.99.
8. MidwayUSA — Now Purchase Firearms from MidwayUSA
MidwayUSA is now selling pistols, rifles, and shotguns. Offering firearms for sale is a return to MidwayUSA’s roots. The company actually started out as a small gun shop 41 years ago. Since then the company expanded first to catalog sales, and then became one of the largest shooting sports online retailers. Now MidwayUSA will be offering a full line of firearms, with promotional offers directly from suppliers and manufacturers. We took a quick look — the selection of firearms is outstanding, but you may find better pricing elsewhere. As with anything, it pays to comparison shop. CLICK HERE for MidwayUSA’s online gun shop.
9. Amazon — Two Rolls of 3″ Neon Target Stickers, $14.95
We like these bright, Neon 3″ target stickers. They are big enough to see easily at 600 yards, giving you a 1/2 MOA target center at that distance. For $14.95 at Amazon.com, you get 250 3″-diameter self-adhesive centers (125 targets per roll) that stick to almost any surface The high-contrast fluorescent red/orange color provides an excellent HI-VIZ aiming point, along with good contrast for bullet holes that fall within the 3″ circle. To help line up your reticle cross-hairs, the target centers feature black markers at 3, 6, 9, and 12 0’Clock. NOTE: These stickers may qualify for FREE Shipping with combined orders over $25.00.
Nosler created the 22 Nosler cartridge to wring the highest possible ballistic performance from a .22-caliber, AR-compatible cartridge that also provides adequate barrel life and maximum ease of conversion. The 22 Nosler achieved these objectives and much more — it delivers far better performance than the .223 Remington and even out-runs the 224 Valkyrie.
In ballistics, there’s no free lunch. Larger powder capacity at similar operating pressures equates to higher velocity potential. In the case of the 22 Nosler, this is evidenced by a 4-5 grain capacity increase over the tried and true .223 Remington, and a 2-3 grain capacity advantage over the newly-introduced 224 Valkyrie. This larger “engine room” allows the 22 Nosler to deliver higher velocities. That translates to less drop (flatter trajectory) at long range.
Faster than .223 Rem and 224 Valkyrie
When loaded with 80 grain low-drag match bullets and fired from the same 24″ barrel (bolt actions, not gas guns) the 22 Nosler outruns the 224 Valkyrie by about 150 fps. Compared to the .223 Remington, the difference is even more remarkable — the 22 Nosler runs over 300 fps faster! These velocity improvements give the 22 Nosler a clear advantage in long-range trajectory and downrange energy retention.
How to Run the 22 Nosler in Your AR-Platform Rifle
Converting your AR to 22 Nosler is as simple as a barrel and magazine change, and there are countless AR-platform MSRs in circulation with the proper 0.378” (.223 Rem) sized bolt face. By comparison, to make the swap to 224 Valkyrie, you must purchase a dedicated .224-Valkyrie upper (not cheap!), or at the minimum add a new barrel, modified bolt with proper bolt face, and 6.8 SPC-compliant mags.
This video compares the specifications of the 22 Nosler and .223 Remington. Bolt face dimensions are identical for the 22 Nosler and the 223 Rem / 5.56 NATO at 0.378″, so no bolt swap is required.
Many Factory Ammo Options — from 55 to 85 grains
Nosler offers a variety of factory loads in 22 Nosler, suited to a wide range of applications. Will you be shooting long range targets? Try the 70 or 85 grain RDFs loaded in Nosler Match Grade Ammunition. Are hogs or deer on the menu? Choose Nosler Trophy Grade Ammunition, with either the 55 grain E-Tip (non-lead) bullet or the 70 grain AccuBond®. Taking out varmints or predators? Nosler’s Varmageddon with 62 grain Hollow Point or Trophy Grade Varmint ammo with 55 grain Ballistic Tip (the world’s first polymer tipped varmint bullet) — will stop any varmint in its tracks.
If you want to turn your AR-platform MSR into a completely different animal, the 22 Nosler can open up a whole new level of performance.
Shorter, Fatter, Faster, Flatter. The new .224 Valkyrie is the hot new cartridge for the AR15 platform. With a shorter, fatter cartridge based on the 6.8 SPC case, the .224 Valkyrie delivers high muzzle velocities for a flatter trajectory at long range. With the latest high-BC projectiles, the .224 Valkyrie can stay supersonic to 1300 yards and beyond.
Sierra Bullets recently provided new load data and twist info for the .224 Valkyrie: “Sierra recommends a 1:6.5″-twist barrel for the #9290 22 cal 90 gr HPBT bullet. However, for cartridges like the Valkyrie, that can push them over 2650 fps muzzle velocity, a 1:7″-twist barrel will stabilize the bullet correctly.”
Shown below is Sierra’s load data for bullet weights from 77 grains to 90 grains. Values in green indicate MAXIMUM loads — use CAUTION. NOTE: This is only a partial sample, less than a third of the data Sierra has published. Download Sierra’s Full 4-page PDF to view all the data, including load information for Sierra’s new 95gr .224-caliber MatchKing with claimed 0.600 G1 BC.
About the .224 Valkyrie Cartridge
Basically a 6.8 SPC necked down to .22, the Valkyrie has a shorter case than the .223 Remington (and 5.56×45 NATO). This allows you to load the longest, heaviest .224-caliber bullets and still feed reliably from an AR15-type magazine. With Sierra’s remarkable new 95-grain MatchKing, this gives the little Valkyrie long-range performance that can rival some much larger cartridge types. Sierra Bullets states: “The [Valkyrie] case length is shorter than the 223 Remington affording the use of heavier match-grade bullets with very long ogives and high ballistic coefficients. This offers … super-sonic velocities at ranges greater than the .223 Remington and the 6.5 Grendel can achieve at magazine length”.
If you are looking for popular Alliant powders, now’s a good time to buy. Midsouth Shooters Supply has discounted its inventory of Alliant powders, plus there is a $2 per pound factory rebate. So, for example, the sale price might be $1.50 off regular retail, and then Alliant gives you another $2.00 back for every pound you buy (up to 10 pounds or $20 total rebate). But act soon — this Powder Promotion ends June 30, 2018. Here are some of Midsouth’s current prices on Alliant powders
Alliant AR Comp — $27.45 1 lb.
Alliant Power Pro Varmint — $25.45 1 lb.
Alliant Power Pro 2000 MR — $25.45 1 lb.
Alliant American Select — $21.99 1 lb.
Alliant Unique — $21.99 1 lb.
Alliant Reloder 16 — Great Powder for Match Cartridges
Alliant Reloder 16 is used now by many top shooters for cartridges that work well with Hodgdon H4350. In fact, we’d say that Reloder 16 is the best substitute for H4350 on the market. Alliant’s RL 16 is very temp stable, offers good velocity, and the accuracy is top tier. Some guys report slightly better accuracy than H4350 in the .284 Win, .260 Rem, 6.5 Creedmoor, 6mm Creedmoor, and 6XC cartridges. If you currently use H4350, you should give Alliant Reloder 16 a try. The powder also boasts excellent lot-to-lot consistency and contains a proprietary de-coppering additive.
This is NOT just a slower version of Alliant’s double-based Reloder 15 (which words great in the 6mmBR and Dasher cartridges). Reloder 16 is a completely new formulation, produced in Sweden by Bofors for Alliant. Reloder 16 utilizes TZ technology, which manipulates the response of the propellant and resists the natural tendency to generate more pressure at higher temperatures and less pressure at lower temperatures. As a result, Reloder 16 offers outstanding temperature stability.
Match and Hunting Cartridge Applications:
Alliant tells us that Reloder 16 “is ideal for traditional hunting cartridges, such as .30-06 Springfield and .270 Winchester, as well as 6.5mm target loads and tactical applications wherein temperature stability is required.” We also think the powder may work very well in these popular match cartridges: 6XC, .243 Win, 6.5×47 Lapua, 6.5 Creedmoor, .260 Rem, .284 Win, and .300 WSM. For example, Alliant’s Load Data Sheet shows a 2772 FPS load with 142gr SMKs in the .260 Rem.
Shopping for gun parts, ammo, or reloading supplies? You will want to check out Brownells this month. There are Discount Codes that will qualify you for significant savings plus FREE Shipping. Use these Codes during check-out and the savings will reduce your net cost. Get up to $25 off on a $200 purchase — that’s a 12.5% savings. The best Discount Codes expire at the end of the month, June 30, 2018 at 11:59 pm, so don’t delay.
Two respected shooters have observed an increase in velocity with new barrels, typically after 100 rounds. Gunsmith and Hall-of-Fame benchrest shooter Thomas “Speedy” Gonzalez has documented barrel speed-up with testing. Moreover, Speedy’s bore-scope barrel inspections revealed a smoothing of the barrel lands. Jim See, a top PRS competitor, has encountered barrel speed-up many times. Accordingly, he re-tunes his load at 150 rounds.
To learn more about how ambient temperature (and primer choice) affect pressures (and hence velocities) you should read the article 
Note: On the 
