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December 22nd, 2011
 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.
November 13th, 2011
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:
.308 dia. 110 gr. FMJ Pro-Hunter Item 2105
.308 dia. 110 gr. HP Varminter Item 2110
.308 dia. 110 gr. RN Pro-Hunter Item 2100
.308 dia. 125 gr. SPT Pro-Hunter Item 2120
.308 dia. 135 gr. HPBT MatchKing Item 2123
January 25th, 2011
 Sierra Bullets introduced four new projectiles at SHOT Show 2011: 180gr 7mm MK; 225gr .338 ProHunter; and two new 25-caliber BlitzKings. 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).
New .338 Hunting Bullet and two New .257-Caliber Varmint Bullets
For the hunting crowd, Sierra has released a new .338-caliber bullet and two new .257-caliber projectiles. The new .338 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.
For varminters, Sierra has introduced two new .25 caliber (.257 diam.) BlitzKing bullets, in 70 grain (Part #1605) and 90 grain (Part # 1616) sizes. The 70-grainer is a flat-base design, while the 90-grainer is a boat-tail. According to Sierra, these were created to provide enhanced long-range performance for 25-caliber varmint hunters. We predict the 90-grainer will also be an excellent target bullet. These bullets will be available in boxes of 100 bullets and 500 bullets as indicated below.
January 7th, 2011
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.”
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