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November 5th, 2010
 Berger Bullets has released a brand new bullet designed to work in 6mm rifles with a 1:10″ or faster twist. This new bullet borrows its basic design from the very accurate 95gr VLD, but it is shorter so it can fully stabilize in a 10-twist barrel.
This thin-jacket hunting bullet has been confirmed in testing to work in a 1:10” twist or faster barrel, and was specifically designed for those who want to hunt with factory rifles. Berger Ballistician Bryan Litz field-tested the new 87gr bullet. Here is his report:
For the new 87gr VLD, the G1 BC is .412, and the G7 BC is .211. Prior to this bullet, our lightest Hunting VLD was the 95 grainer, which requires a 1:9″ twist. This left many shooters with no option from Berger for a 6mm hunting bullet because the fastest common twist for many 6mm factory barrels is 1:10″. The 87 grain VLD was designed specifically to fill the gap, and it squeezes the most performance possible out of the common 1:10″ twist barrel. As with all Berger Hunting VLDs, this is the standard J4 (thin) jacket. There is not a Target (thick-jacket) version planned for this design.
L to R – Berger 6mm 87 gr, 95 gr, 105 gr, and 115 gr Match Grade Hunting VLD.
87gr VLDs are In Stock and Ready to Ship
Eric Stecker tells us: “We are excited to announce that our 6mm 87gr Hunting VLD bullets are now available. They are on the shelves now and ready to ship. We have made several shipments to dealers and have more bullets in stock at our shop now. We also have enough jackets ready to make more if we run out quickly. Currently the 87gr VLD is only available in 100-ct boxes.”
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October 6th, 2010
Many shooters using the 6mmBR case or a 6BR Improved (6 BRX, Dasher), automatically assume they should be shooting the heavier 105-108gr bullet designs because these offer the “best” ballistic coefficient attainable with a bullet that can work in an 8-twist barrel.
 However, if you are shooting a 6BR at medium ranges, say 250 to 400 yards, you should seriously consider trying the 90-95 grain class of bullets, which includes the Berger 90gr Match Target BT, the Lapua 90gr Scenar, the Berger 95gr Match Target VLD, and the Sierra 95gr MatchKing.
First, you may find that, in your barrel, the 90-95 grainers are easier to tune in terms of seating depth, and they may offer somewhat better raw accuracy — yielding smaller groups than the heavier bullets. But remember — each gun/barrel is different.
Second, another advantage of the 90-95s is that you can fill the case fuller with the Varget/RL-15 class of powders (with appropriate throats). You can use more powder and therefore get closer to an optimal 100% case fill. With a 95gr VLD seated long we were able to get virtually 100% fill with a slow lot of Varget. Don’t try that with your 105s!
Lighter Bullets Offer More Speed in a 6BR
You’ll find that, in a standard 6mmBR rifle, you can drive the 90-95 grainers considerably faster than the 105-108 grain bullets at equivalent pressures. In an Eliseo R5 Tubegun, with Broughton 27.5″ 5C barrel, we were able to push the 95gr VLDs a full 160 fps faster than the 108s. This means that the true ballistics of the 90-95s rival that of the heavy bullets — at medium ranges.
We were able to drive the 90-grainers and the 95gr VLDs comfortably and very accurately at 3050 fps, whereas we maxed out at about 2890 fps with the 105gr and 108gr Bergers. At 300 yards, the 95gr bullet’s speed advantage compensates, in large part, for any BC shortfall compared to heavier bullets. In fact, in our rifle, the 95gr VLD actually shows less wind drift at 300 yards than either the Berger 105 Match Target BT or the Berger 108 Match Target BT. See chart.
Here’s data from JBM Ballistics, using G7 Coefficients (500′ alt, 70° temp):
LESSON: Don’t always assume that the heavier bullet has superior ballistics. You have to test, find the accuracy nodes for each bullet in your gun, and run the ballistics for the velocities you can actually achieve with good accuracy. As above, you may be surprised. In our Eliseo Tubegun, the 90-grainers shot tighter than 105s and we gave up little, if anything, in wind drift at 300 yards.
Great Accuracy from 90s and 95s in 6mmBR Tubeguns
In our Broughton-barreled Tubegun, the most accurate bullet so far has been the 90gr Lapua Scenar. In a Savage 6BR with 3-groove PacNor Barrel the Berger 95gr VLD has been ultra-accurate. But we really want to try the 95gr Sierra MK as well. Forum member Randy (aka “InfantryTrophy”) has been shooting the 95gr SMK with great success, and impressive accuracy. Here is his report: “The 95 SMK shoots great. I have not had the opportunity to shoot the 95s at 200 or 300 yards, but I can’t think of anything better to use. This is my first 5-round group fired after about 15 break-in rounds. The load is 29.5 grains of Reloder 15 with SMK 95. The gun is an Eliseo R5 with Pierce action and Broughton 27″ barrel. Shown below is a 5-shot, 100-yard group shot at 100 yards on MR31 target with iron sights, from rest.” Randy measured his group at 0.214″. It looks a bit bigger than that to us, but it is still impressive:
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January 21st, 2010
 We had a long chat with Eric Stecker, Berger Bullet’s Master Bulletsmith. Eric had some interesting revelations. First he noted that Berger’s production in 2009 was up 50% compared to the previous year. Berger is now running 24-hour shifts to meet demand. And Berger isn’t resting on its laurels. A new .338 bullet is going into production, and Berger now has the means to produce .416s and even 50-caliber bullets. Berger also has multiple new prototype long-range bullets in development. Eric let me look at them and hold them but he requested that we NOT publish photos as the bullet profiles are somewhat radical. Eric revealed that a new series of short-range 6mm bullets in the 60-grain range are probably going to be released later this year. These borrow some design ideas from the successful Euber FB bullets, with refinements to improve ballistics.
We covered many other topics during our interview, including the status of the new Berger Reloading handbook, and the differences between the G1 vs. G7 Ballistics models. Click on the video link below to learn all the latest info from Berger.
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December 25th, 2009
Sam Hall of Boonville, North Carolina is “King of the Hill” when it comes to the 600-yard benchrest game. He is the 2009 IBS 600-yard Shooter of the Year, and he won the IBS 600-yard Nationals two years in a row. When Sam talks, people listen… if they’re smart. Sam was recently asked to compare the performance of Berger’s 6mm 108gr boattail vs. Berger’s 105gr VLD bullet. As Sam explains, both bullets have the potential to shoot really well, so your barrel and the conditions may dictate which projectile works best.
Berger 105gr VLDs vs. Berger 108gr BT by Sam Hall
I shot the 108gr Bergers (and 108 BT BIBs for a few matches) all last year in my Light Gun (LG) and Heavy Gun (HG) in 600-yard IBS competition, but switched to Berger VLDs during the Nationals because of the extreme winds in South Dakota.
When I started loading for the 108s, I quickly learned they are much easier to tune than VLDs. In the two barrels in which I shot the 108s, they did not seem to be sensitive to seating depth or powder charge like the 105 VLDs. I could not see much difference in groups at 600 yards during tuning. But, with the 108s, you will need to drop about one grain in powder compared to the VLDs due to longer bearing surface and extra weight. It seemed that the 108s show a consistent round-pattern group, where the VLDs many times have flyers. By this I mean, if both the 108s and 105 VLDs shoot a two-inch, 5-shot group at 600, the 108s will be evenly distributed in the two-inch circle. Conversely, the time the VLD’s will often have 3 or 4 shots in one inch but 1 or 2 flyers expanding the group to two inches. But when the VLDs don’t have a flyer, look out! That’s when most of the World Records have been set and VLD shooters have come from behind and won the match. (Yes, I am talking to you Mike Davis).
 Mike Davis and I talked about the Berger 108s vs. 105s last year. The 108gr BTs are great until the wind gets up. They seem to get blown around more than the VLDs. A half-inch extra at 600 yards these days means the difference between winning or ending up middle of the pack. So, ideally, a shooter would have two loads. One would use the 108s for mild days, and the second would use the 105gr VLDs for those windy days.
If you don’t have time to tune the 105gr VLDs (tuning them can be difficult and time-consuming), I suggest you stick to the 108s. They will save you a lot of headaches and will stick close to the VLDs in most conditions.
How Temp and Humidity Affect Performance
I almost forgot to mention. As the temperature and humidity got up in the summertime last year in North Carolina, the 108s did not perform for me as well as they did during the cooler, less humid months. I tried developing a new, hot-weather load for the 108s, but I never got the 108s to perform as well in the summer as I did in the winter and spring — even when there was no wind. I don’t know why the 108s prefer cooler, less humid conditions, except maybe because they have more drag than the 105gr VLDs. High humidity may have had more of an effect on the 108s than we’d expect from the slight BC difference between the two bullets. The VLDs seem to drill through the wind and humidity better than the 108gr Bergers. NOTE: These findings are my own opinion based on many, many groups shot tuning and in competiton, while using several barrels of various manufacturers.
I hope this helps and does not further complicate your load development process. Try both bullets before you buy a large quantity of bullets. Your rifle will let you know which projectile it prefers. We have often found that a particular barrel will shoot one bullet design well but not the other. A few barrels will shoot BOTH bullet types really well.”
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March 14th, 2009
 The folks at Berger Bullets have just released an interesting technical bulletin that describes methods for optimizing bullet seating depths with Berger VLDs. The document explains how to find the OAL “sweet spot” for VLDs in your rifle. Interestingly, while VLDs commonly work best seated into the rifling .010″ or more, Berger’s research indicates that, in some rifles, VLDs perform well jumped .040″ or more. This is a significant finding, one that’s backed-up by real-world testing by many shooters.
The key point in Berger’s report is that: “VLD bullets shoot best when loaded to a Cartridge Overall Length (COAL) that puts the bullet in a ‘sweet spot’. This sweet spot is a band .030″ to .040″ wide and is located anywhere between jamming the bullets into the lands and .150″ jump off the lands.”
CLICK HERE to download Berger VLD Tuning Tips
Writing in the report, Berger’s Eric Stecker observes: “Many reloaders feel (and I tend to agree) that meaningful COAL adjustments are .002 to .005. Every once in a while I might adjust the COAL by .010 but this seems like I am moving the bullet the length of a football field. The only way a shooter will be able to benefit from this situation is to let go of this opinion that more than .010 change is too much (me included).”
For target competition shooters (for whom it is practical to seat into the lands), Berger recommends the following test to find your rifle’s VLD sweet spot.
Load 24 rounds at the following COAL:
1. .010″ into (touching) the lands (jam) 6 rounds
2. .040″ off the lands (jump) 6 rounds
3. .080″ off the lands (jump) 6 rounds
4. .120″ off the lands (jump) 6 rounds
Berger predicts that: “One of these 4 COALs will outperform the other three by a considerable margin. Once you know which one of these 4 COAL shoots best then you can tweak the COAL +/- .002 or .005.”
OBSERVATION and WARNING
Berger may definitely be on to something here, and we applaud Berger’s testers for testing a very broad range of seating depths. However, we want to issue a STRONG WARNING to reloaders who may be inclined to try the 4-step method listed above.
Be aware that, as you load your cartridge progressively shorter, putting the bullet deeper into the case, you will be reducing the effective case capacity dramatically. With smaller cases, such as the .223 Rem and 6mmBR, moving from .010″ into the lands to .080″ and .120″ off the lands can CAUSE a dramatic pressure rise. So, a load .010″ into the lands that may be safe can be WAY OVERPRESSURE with the bullet seated .120″ off the lands (i.e. .130″ deeper in the case, the difference between .010″ in and .120″ out).
To illustrate, using a QuickLOAD simulation for the 6mmBR cartridge, moving the bullet 0.130″ deeper into the case can raise pressures dramatically. With the Berger 105 VLD seated .010″ in the lands (with 0.220 of bearing surface in the neck), and a charge of 30.0 grains of Varget, QuickLOAD predicts 60,887 psi. (This is using ADI 2208 data, and a 5500 psi start initiation value). If we move the bullet back 0.130″ further into the case, QuickLOAD predicts 64,420 psi (even after we drop start initiation pressure to the “default” non-jammed 3625 psi value). The 64,420 psi level is way higher!
| Cartridge & Load |
COAL |
Jam/Jump* |
Start Pressure |
Max Pressure |
6mmBR, 30.0 Varget
Berger 105 VLD |
2.354″ |
+0.010″ in lands |
5500 psi |
60,887 psi |
6mmBR, 30.0 Varget
Berger 105 VLD |
2.324″ |
-0.20″ JUMP |
3625 psi |
59,645 psi |
6mmBR, 30.0 Varget
Berger 105 VLD |
2.264″ |
-0.80″ JUMP |
3625 psi |
62,413 psi |
6mmBR, 30.0 Varget
Berger 105 VLD |
2.224″ |
-0.120″ JUMP |
3625 psi |
64,420 psi |
* As used here, this is the variance in OAL from a load length where the bullet ogive just touches the lands (first jacket to barrel contact). Loading bullets to an OAL beyond that point is “jamming” (seating bullet into lands), while loading to an OAL shorter than that is “jumping” (seating bullet away from lands).
NOTE: This is only a software simulation, and the real pressures you encounter may be different. But, the point is that moving the bullet 0.130″ further down in a 6mmBR case can raise pressures more than 3,000 psi! Therefore, you must employ EXTREME CAUTION when moving your bullets that much in a relatively small case. Remember that going from .010″ jam to a very long jump will probably increase pressures in your cartridge so you MUST adjust your load accordingly.
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January 16th, 2009
Jason’s first stop on his 2009 SHOT Show tour was at the Berger Bullets booth. Our readers know that Berger manufactures some of the best varmint and match bullets in the world. Eric Stecker, Berger’s master bulletsmith, announced that Berger is organizing its production into three main lines: Varmint bullets (flat-base and standard boat-tails), Target bullets (both Tangent Ogive and VLD designs) with thicker jackets, and Hunting bullets (low-drag VLD with standard J4 jackets).
A design effort is underway to optimize the “long range” bullet shapes, centering around a tangent ogive BT design with shorter than normal bearing surface. This allows a longer nose shape with a better BC. It should also be easier to tune, given the tangent ogive design. Berger’s designers are also working with a double ogive shape for big bore bullets. This will feature a tangent ogive immediately above the bearing surface to allow a smoother transition into the lands. Then the shape transitions to a secant ogive for better BC and a smaller meplat.
New 20 Caliber Bullet is Ready and Two .338 Projectiles in the Works
Berger announced a new 55gr, 20-caliber “Long Range” BT bullet. Prototypes have been tested successfully in 8-twist barrels. With sufficient velocities a 1:9″ twist might work also, but Berger wants more field testing–by shooters like you. NOTE: Berger is currently looking for “volunteers” to test this new 20-cal 55-grainer in 8-Twist and 9-Twist barrels. Contact Michelle Gallagher at Berger for more details.
Big-bore shooters will be pleased to learn Berger hopes to release both 250gr and 300gr .338-caliber bullets by the end of 2009. While design work is on-going, Berger expects to offer tangent ogive, secant ogive, and double-radius .338 projectiles in both 250gr and 300gr weights. So you’ll have a choice of three different bullet shapes, each in two weights. That’s good news for hunters and ultra-long-range shooters.
Bullet Ballistic Coefficients (BCs) to Be Analyzed and Updated
Berger recently hired Bryan Litz as an in-house ballistics experts. Bryan, a top-level High Power and long-range shooter, formerly worked with the Air Force as a rocket ballistics scientist. Drawing on his expertise, Berger will be testing its match bullets to establish more precise drag figures. So, you may see the stated BCs on your favorite Berger bullets changing a bit in the future, but those changes will be based on improved design analysis and testing.
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