If you shoot Service Rifle, or use a .223 Rem at medium to long range, you should read J. Guthrie’s ShootingTimes.com review of Black Hills MK 262 Mod 1 ammunition. Originally developed for military applications, this very accurate ammo is now available for civilians to purchase. It uses a special Sierra 77gr MatchKing bullet with cannelure. Black Hills did extensive testing to develop this ammunition, shooting over 250,000 test rounds with various propellants and projectiles. Eventually, the Sierra 77gr MK bullet was chosen, with a powder that delivers 2750 fps MV (from a 20″ barrel).
Sierra’s 77-grain bullet delivered great accuracy at long range. Guthrie explains: “Several bullets were used during the development process, including the 73-grain Berger, 77-grain Sierra MatchKing, and 77-grain Nosler HPBT. Black Hills finally settled on the MatchKing when Sierra agreed to put a cannelure on the bullet. In test fixtures Sierra’s bullet proved slightly more accurate. Accuracy was exceptional, certainly an improvement over M855 [military 5.56x45mm ammunition].”
Guthrie’s article explains that this ammo design started off as target ammunition developed for the USAMU. That was followed by a 1999 request from the Naval Surface Warfare Center, Crane Division for a round that would work with a suppressed, short-barrel M16 variant. Over the years, as Black Hills produced more ammo for the U.S. military, this ammunition continued to be improved. Guthrie notes: “The name changed with each modification. MK 262 Mod 0 was adopted in 2002, Mod 1 came along in 2003 with the cannelure, and an improvement to temperature sensitivity came along in 2005.”
According to Black Hills President James Hoffman, the MK 262 ammo “developed a cult following… so [in 2011] we started offering it to the public. The only difference is the packaging — it is the exact same ammunition as is delivered to the U.S. Military — loaded to the exact same specs”. The commercial version is sold in black/red 50-count boxes labeled “5.56mm 77 GR OTM”. The exact same ammo is issued to American war-fighters in 20-round, brown cardboard boxes labeled “5.56mm SPECIAL BALL, LR MK 262 MOD 1.”
Field Test of Black Hills MK 262 Mod 1 Ammunition
About J. Guthrie: Last April, at the much-too-young age of 37 years, outdoor writer J. Guthrie passed away in his sleep, leaving a wife and two young children. Field & Stream noted: “Guthrie was already a major player and a pro’s pro, but he wanted to be more. He wanted to be a Gun Writer in the old style. It’s a terrible loss for all of us that his run was cut so short.”
Story idea from Grant Guess. We welcome reader submissions.
The 300 AAC Blackout (300 BLK, or 7.62x35mm) was created by Advanced Armament Corp. and Remington in order to provide the military with a way to shoot .30-caliber bullets from the M4 carbines with only a barrel change. It has since become popular with AR shooters for a wide range of uses including hunting and home defense. With the increased popularity of this cartridge, folks have been looking for reliable 300 BLK load information. Now, thanks to Sierra Bullets, we have some good load data for the 300 AAC Blackout. Sierra has released a FREE 6-page Load Guide for this cartridge, as part of the Sierra Reloading Manual (5th Edition).
Here is ONE of SIX Pages in the Sierra Load Sheet for 300 AAC Blackout
About the 300 AAC Blackout (300 BLK)
The 300 AAC Blackout cartridge shares case-head dimensions and body taper with the .223 Remington. Not only does this allow for compatibility with existing magazines and bolts, but it allows reloaders to form their own brass from cut-down 5.56×45 mm or .223 Rem cases. You can also form 300 Blackout cases by necking-up .221 Fireball brass. Take Note: Lapua has started producing .221 Fireball brass — this should be available in the USA by early April.
The 300 AAC Blackout is a similar concept to previous wildcats, such as the 30-221 and 300 Fireball, as well as the proprietary 300 Whisper®, except that 300 BLK was the first to be a SAAMI-approved cartridge and any company is free to make firearms or ammunition.
300 AAC Blackout is also finding use with hunters, who may not have been able to legally hunt with .223 in their state, and who prefer .30 caliber bullets for medium-sized game. It provides similar effectiveness to the 7.62×39 or the slightly more powerful .30-30 cartridges except works in the more up-to-date AR-platform rifles. Effective hunting range is about 150 yards. Some innovators, such as Dave Whitford, have also experimented with the 300 BLK for Across-the-Course competition. READ Whitford story in Rifleman’s Journal..
With bullets in short supply and prices rising, here’s an opportunity for you folks located in the middle of the country who can visit Missouri. Sierra offers discounted bullets at its Factory Outlet store in Sedalia, Missouri. Sierra says: “If you happen to be in our neck of the woods, you can purchase available bullet seconds and our full line of products directly from our outlet store”.
Sierra’s Factory Outlet inventory is constantly changing and no guarantees are made as to product availability. Bullet seconds are sold by the pound and are limited to 100 pounds per bullet type and a total of 300 pounds per day per person. There is a limit of 25 pounds of mixed bullets per day. Bullet seconds are for private consumption and not for resale! Factory seconds may include blemished bullets and mixed bullets, so weigh and measure each bullet prior to loading! Factory seconds must be picked up in person and will not be shipped.
For more information, call Sierra at (888) 223-3006 or send email to: sierra[at]sierrabullets.com .
Story tip by EdLongrange. We welcome reader submissions.
Sierra Bullets rolled out few new products for SHOT Show 2012. The one new bullet is a .30-caliber flat-based bullet, the 125gr OTM (open-tip match HP) MatchKing, item #2121. This unique flat-based bullet was designed in conjunction with AAC (Advanced Armament Corporation) and Remington for the new .300 AAC Blackout (BLK) cartridge, a relatively small cartridge based on the .223 Rem necked up to .30 caliber. The bullet length is tailored to correctly fit and feed from AR-15 platform magazines. The relatively light weight of Sierra’s new 125gr MK allows it to reach fairly impressive velocities even with a modest powder charge. Of course it can also be used in subsonic mode, running at sub-Mach velocities. However, it is more typical for .300 BLK shooters to run a heavier bullet, such as the 240gr SMK, for subsonic applications (the heavier projectile delivers much more downrange energy at subsonic MVs).
The projectile’s Open Tip is pinched for greater uniformity in the same manner as Sierra’s Palma Competition bullets. The G1 BC is surprisingly high for a relatively short, flat-based bullet: 0.310 (below 1600 fps), 0.330 (1,600-2,000 fps), 0.338 (2000 – 2650 fps), and 0.349 (above 2650 fps). Though it will perform well at low velocities in the .300 BLK, this bullet can handle the higher velocities produced by common .30 cal mid-sized cartridges, such as the .30-30.
The new 125gr Matchking is now being loaded in factory ammo, including Remington’s Premier Match, which retails for $34.00 for a 20rd box. These 125gr bullets are available now from MidwayUSA for $34.99 per hundred.
Along with showcasing his books, match ammo, and other products, Bryan Litz’s Applied Ballistics website offers detailed Bullet Data Profiles for popular match projectiles. These profiles provide accurate bullet dimensions, stability factors (based on barrel twist rates), plus sophisticated multi-value BC tables that provide field-tested BCs across a wide velocity spectrum. Using these tables, you can select a G1 or G7 BC that closely matches a bullet’s actual muzzle velocity fired from your gun. Choosing the right BC for a bullet’s known MV from your rifle provides a more accurate ballistics solution — which translates to more first-round hits on the target.
New 6mm Bullet Data Profiles
Bryan recently added two new 6mm Bullet Profiles to his website: Sierra’s 107gr MatchKing, and Hornady’s 105gr A-Max.
Sierra 107gr MatchKing, HPBT
Sierra’s 107gr MatchKing has been used reliably in many medium- to high-capacity 6mm chamberings for many years. At 107 grains, this bullet is heavy enough to have a respectably-high BC while not being excessively long. This bullet is the ‘middle brother’ in the heavy end of Sierra’s 6mm target bullet line-up. The 95gr and the 115gr bullets have essentially the same nose and tail, and almost identical form factors as a result. The only difference being the weight which is taken up in the bearing surface. This bullet is comfortably stable in a 1:8″ twist in all but the worse case conditions, and even then the stability factor is still 1.33 which would result in acceptably accurate flight.
Hornady 105gr A-Max, PTBT
The 105gr Hornady A-Max is a very well-designed bullet with good performance. The plastic tip (PT) promotes a little higher and more consist BC compared to standard match bullet meplats while the 2.71-caliber long tangent ogive produces a low drag profile and good accuracy over a wide range of seating depths. The experimentally determined average G1 BC of 0.492 varies from 0.515 at 3000 fps down to 0.454 at 1500 fps. The G7 BC is a much better match for this bullet. Application-wise, this bullet was designed to be a match bullet, but has found favor with hunters as well due to the relatively thin forward jacket promoting good expansion.
Bryan’s Ballistics Book Offers Hundreds of Bullet Data Profiles
Bryan currently offers ten (10) detailed bullet profiles on his website — you can access these for free. If you want information on scores of other projectiles, you’ll find 236 other Bullet Data Profiles in Bryan’s definitive book, Applied Ballistics for Long-Range Shooting.
Prices of bullets and brass have gone up dramatically in recent months. We are hearing from active shooters that cost considerations are influencing their decisions about what calibers and chamberings to shoot. There is a definite trend to smaller cartridges and lighter bullets.
One match shooter told us: “I’ve been debating between a 6.5×47 Lapua and a 6-6.5×47. After comparing the cost of 6.5mm vs. 6mm bullets, I decided on the 6mm. If I save $7 bucks a box, and shoot 4000 rounds a year (40 boxes of bullets), that’s $280.00 in savings–enough to buy a new barrel.”
Here are some comparative bullet prices for 6mm, 6.5mm, 7mm, and 30-caliber bullets at Midsouth Shooters Supply. Prices are for a 100-count box. Note that the 6.5mm match bullets cost 25% more than the 6mms. For active shooters, the price difference adds up quickly. (Prices from current catalog listings; particular items may be out of stock.)
Brand
6mm
6.5mm
7mm
.308
Berger
105gr VLD $30.15
140gr VLD $37.87
180gr VLD $44.12
190gr VLD $45.37
Sierra
107gr MK $26.25
142gr MK $32.45
175gr MK $31.08
200gr MK $33.73
Here are brass costs for Lapua brass from Grafs.com. Prices are for 100-count boxes (or four 25-count boxes for the .338 Lapua Magnum). Generally speaking, the bigger the case, the higher the price (except for the .308 Win).
.223 Rem
.243 Win
6.5×47 Lapua
6.5-284
.308 Win
.338 Lapua Mag
$58.99
$93.99
$104.99
$118.99
$69.99
$264.99
Consider Barrel Life Also
Certainly, moving to a smaller caliber can often reduce what you have to pay for brass and bullets. On the other hand, you need to consider barrel life. Hot-loaded 6mms, such as a .243 Ackley, can burn up a barrel much more quickly than a .308 Winchester. In comparing the “operating costs” of various cartridges, you need to factor in barrel replacement costs as well as component prices. If you have to spend $550 (including smithing) to replace a custom 6mm barrel every 1500 rounds, you’re spending $1100 more than a guy who has a .308 Win which lasts 4500 rounds.
Sierra has introduced a new .30-caliber flat-based bullet, the 125 grain OTM (open-tip match HP) MatchKing, item #2121. This unique flat-based bullet was designed in conjunction with AAC (Advanced Armament Corporation) and Remington for the new .300 AAC Blackout (BLK) cartridge. The bullet length is tailored to correctly fit and feed from AR-15 platform magazines. The projectile’s Open Tip is pinched for greater uniformity in the same manner as Sierra’s Palma Competition bullets. The G1 BC is surprisingly high for a relatively short, flat-based bullet: 0.310 (below 1600 fps), 0.330 (1,600-2,000 fps), 0.338 (2000 – 2650 fps), and 0.349 (above 2650 fps). Though it will perform well at low velocities in the .300 BLK, this bullet can handle the higher velocities produced by common .30 cal mid-sized cartridges, such as the .30-30.
The new 125gr Matchking is now being loaded in factory ammo, including Remington’s Premier Match, which retails for $34.00 for a 20rd box. These 125gr bullets are available now from MidwayUSA for $34.99 per hundred. Sierra offers five other bullets in the same general weight range that may work well in the .300 Whisper or .300 AAC Blackout:
For its web customers, Creedmoor Sports is running a sale on Sierra Bullets and select Lapua cartridge brass. You can get 5% off a big 500-count box of Sierra Bullets, and save 10% on Lapua .260 Rem or .338 Lapua Magnum brass. Discounts are good through 11:59 pm, Sunday, August 28, 2011.
Sierra Bullets, 500-ct Box (Any Caliber)
Save 5% with Coupon Code BULLET 2011
Lapua Brass — Weekend Special through 8/28/2011
.260 Rem Brass, $87.95 — marked down from $96.95
.338 Lapua Mag Brass, $229.95 — marked down from $254.95
Black Hills Ammunition (BHA) produces high-quality new and remanufactured ammo. Black Hills remanufactured .223 Rem and .308 Win ammo is popular with tactical shooters because it is cost-effective, yet very accurate since it is loaded with premium match-grade bullets. Black Hills has now come out with a line of hunting ammunition using the very accurate Hornady GMX (Gilding Metal eXpanding) lead-free projectiles. New loads include: 80gr .243 Win; 120gr .260 Rem; 120gr 6.5-.284 Norma; 130gr 270 Win; 150gr .308 Win; 150gr .30-06; 139gr 7mm RemMag; and 165gr 300 WinMag.
The GMX (Gilding Metal eXpanding) bullets are constructed of gilding metal, the same material used for bullet jackets. GMX bullets expand quickly and reliably upon impact, and retain nearly 100% of their weight. These GMX bullets contain no lead, making them a good choice for areas that restrict use of lead-cored bullets. To learn more, contact Black Hills Ammunition at (605) 348-5150.
New Black Hills 5.56 Ammo
For 2011, Black Hills is releasing two new 5.56mm offerings for commercial sale. First, it offers a new match load with 77gr Sierra MatchKings (SMKs). The new 5.56mm ammo pushes the 77gr SMKs at 2750 fps from a 20″ barrel. According to Black Hills: “this load delivers sub-minute accuracy consistently from 10-shot groups.”
Next, Black Hills is making its 50gr police 5.56mm load available to the public. The BHA 5.56mm 50gr TSX load was developed for U.S. law enforcement. This load utilizes a specially-built version of Barnes Bullet Company’s TSX bullet. It provides expansion to .50 caliber immediately upon impact and consistently penetrates to an ideal average penetration depth of 14″ in ballistic gelatin. Black Hills calls this “an ideal civilian defense or law enforcement patrol-rifle round” that works well through a variety of barrel lengths.
New from Sierra Bullets for 2011 are two new heavyweight bullets. The first, the much-awaited 180gr 7mm MatchKing, boasts an impressive 0.660 G1 Ballistic Coefficient. This should be great for F-Classers. Sierra explains: “In response to requests from top level F-Class shooters, Sierra has designed an all-new MatchKing to provide a higher weight/higher B.C. alternative in our 7mm line. This bullet’s 12-caliber secant ogive and lengthened boat tail make it the perfect choice for the discerning 7mm long range shooter. Sierra recommends at least a 1:8″ twist barrel to stabilize this bullet.”
This new MatchKing will compete with Berger’s vaunted 180gr 7mm VLD. It will be interesting to see how the two 180s perform head to head. If you are shooting a 7mm at long range, you should definitely try out the new .284-caliber Sierra MK (provided your barrel has a suitable twist rate).
A New 225-grain, .338 Bullet for Game-Hunting
The second new bullet from Sierra is a 225gr, soft-point, flat-base Pro-Hunter in .338 caliber. Sierra’s goal with this new bullet was to provide a lower-recoiling .338 projectile that still offers plenty of hitting power. Sierra tells us: “The newest member of our Pro-Hunter line is the .338-caliber 225gr SPT Pro-Hunter. The flat-based design and lighter weight of this projectile make it a great choice for medium and large game. This is a perfect choice for those hunters seeking a reduced recoil alternative where a heavier bullet is not required.”
With bullets in short supply and prices rising, here’s an opportunity for you folks located in the middle of the country who can visit Missouri. Sierra offers discounted bullets at its Factory Outlet store in Sedalia, Missouri. Sierra says: “If you happen to be in our neck of the woods, you can purchase available bullet seconds and our full line of products directly from our outlet store”.
The new 125gr Matchking is now being loaded in factory ammo, including Remington’s Premier Match, which retails for 
New Black Hills 5.56 Ammo
