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NEW! Berger 308 bullet with wicked 0.328 G7 BC!

DocUSMCRetired

U.S. Rifle Team Selects New Berger 200.20X Bullet for 2017 World Championships


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Berger Bullets is excited to announce the release of their new .30 caliber 200.20X Hybrid Target Bullet. The 200.20X bullet is the result of extensive research and development in partnership with the U.S. Rifle Team (F-TR), world champion shooters, and accuracy enthusiasts within the long range shooting community.

Berger Chief Ballistician and U.S. Rifle Team (F-TR) member Bryan Litz said, “This is the ideal bullet for F-TR and similar long-range disciplines. The 200.20X has a longer boat tail and nose, with shorter bearing surface which equates to less drag, a higher ballistic coefficient and fewer points lost to the wind. The shorter bearing surface also makes the 200.20X easy to load and shoot in standard chambers. New shooters won’t need special reamers or costly gunsmithing to make this bullet perform.”

Eric Stecker, President of Berger Bullets said, “We are proud to be the Official Bullet of the U.S. Rifle Team (F-TR). To support our team, Berger Bullets will donate $1.00 for every box of 200.20X bullets sold towards U.S. Team expenses for the upcoming 2017 F-TR World Championships, which will be held at the Connaught Ranges in Ottawa, Canada.”

To learn more about the new .30 caliber 200.20X Hybrid Target Bullet and its development, visit http://www.bergerbullets.com/200-20x-perfect-bullet-f-tr/ for details. Order now through your favorite authorized Berger Bullets outlet.

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Bullet Details
Description: 30 Cal 200.20X gr Hybrid Target
Part #: 30417
Retail Price: $63.40
UPC Code: 6-79459-30417-7
Box Weight: 3.00 lbs
Box Dimensions: 3.4 x 3.4 x 2.5
G7 BC: .328
G1 BC: .640
Optimal Twist Rate: 1:10”


About Berger Bullets

Founded in 1955 by Bench Rest Hall of Fame member Walt Berger, Berger originally specialized in bullets for many competitive target shooting disciplines. Berger has since broadened its offerings to match grade rifle bullets for Varmint, Target, Hunting and Tactical applications. To find out more about Berger Bullets, visit www.bergerbullets.com.


About U.S. Rifle Team (F-TR)

The two- time World Champion, U.S. Rifle Team (F-TR) is comprised of 30 shooters and coaches who have dedicated themselves to four years of training and preparation to represent the United States at the 2017 World Championships to be held in Canada. They compete all over the world at various ranges out to 1,000 yards.


Contact info:
Berger Bullets
Geoff Esterline
Sales & Marketing Director
714-441-7235
marketing@bergerbullets.com
 
Well then, this was well timed. I was addressing the envelope to send in two 500ct certificates before they expire.

And yes, 250 and 500 count boxes for competition bullets would be great.
 
Any chance you could post the dimensional measurements of this bullet? I would like to make QL file for it and play around with the numbers. Thanks!
 
bsl135 said:
G7 form factor is 0.919
Click to expand...

Thanks. So what kind of velocities are you seeing in 30-32 inch barrels? Will the .170ish freebore reamers run the boat tail above the neck shoulder?

Does the lower form factor undo the gain of the higher BC, or do I have that backwards? Can you run them faster than the 200 Hybrids is what I am taking the long way around to asking?
 
Dos XX said:
Thanks. So what kind of velocities are you seeing in 30-32 inch barrels? Will the .170ish freebore reamers run the boat tail above the neck shoulder?

Does the lower form factor undo the gain of the higher BC, or do I have that backwards? Can you run them faster than the 200 Hybrids is what I am taking the long way around to asking?
Click to expand...

I'm most familiar with 28" barrels and we're getting~2600-2625 fps, I think you'll be closer to 2650-2675 in a 30"/32" barrel. They're typically faster than the standard 200 Hybrid at the same pressure but I hesitate to put a number on it.

There's plenty of bullet seated in the case neck when seated close to the riflings in a .170" freebore chamber.

Low form factor = low drag = higher BC.

Dimensional data

OAL 1.508

BT Length 0.227

Nose 0.848

BTO 0.706

BS 0.413

SD 0.301

G1 BC 0.640

G7 BC 0.328

Min twist 11.5

Recommended twist 10.3

-Bryan
 
those who understand the numbers can probably tell by looking at them, but essentially what minimum amount of freebore will be needed to seat these bullets properly?
 
200 Hybrid, Berger Handbook:
OAL - 1.500"
BT - 0.220"
Nose - 0.825"
BTO - 0.675"
BS - 0.450"

200 Hybrid, "Ballistic Performance of Rifle Bullets", Bryan Litz
OAL - 1.489"
BT - 0.228" (+.015"???) = 0.243"
Nose - 0.836"
BTO - 0.653"
BS - 0.410"

200.20X, This thread, Bryan Litz
OAL - 1.508"
BT - 0.227"
Nose - 0.848"
BTO - 0.706"
BS - 0.413"

Here are two different sets of values for the 200 Hybrid. If you look at various sources over time, you will find small changes in the dimensional values that I expect reflect lot-to-lot variation. The (+.015"???) for the 2nd 200 Hybrid entry has to do with the little extra length at the very end/base of the boattail in the picture representations in Bryan's book. It needs to be added in to the BT length in order to have the OAL and BTO measurements come out right. Not sure what you call that little segment, I always thought of it as part of the boattail.

In any event, something seems odd to me about the measurements above for the 200.20X. Typically, BTO = OAL - Nose. However, there is a discrepancy when you do this with the 200.20X measurements: 1.508" (OAL) - 0.848" (Nose) = 0.660" (BTO). The value he reported for BTO is 0.706", which is a discrepancy of 0.046". I don't think that could be solely accounted for by the length of that little extra segment thingy I mentioned above, because the typical length values for segment that of different bullets in the book is usually approximately .015" or so. Possibly, one of dimensions reported was somehow off, or else Bryan is using a different procedure to measure the various segment lengths than I am accustomed to seeing. However, I'm not really sure of the reason for the difference, so perhaps Bryan can rectify this issue for us.

Also, in order to make a useful QL file, it is necessary to have either the boattail angle, or the base width, and the boattail length (which we have). I used the side-by-side picture of the two bullets along with the OAL for the 200.20X and known dimensions for the 200 Hybrid to make some estimates, but I don't think they're probably all that great. For example, my best guess for the boattail angle is 9 degrees. If you could provide these data for us Bryan, that would be outstanding! If some of this is proprietary information for the time being, I fully understand and will simply make do with my estimates. Thanks!
 
Last edited:
There are a couple things going on here; some can be answered with definitions given on the Berger Quick Reference Sheet (QRS): http://www.bergerbullets.com/pdf/Quick-Reference-Sheets.pdf

The 'thingy' at the base of the BT, we're calling the 'heal' (I called it a thingy for a while too :) ) It's usually close to 0.015".

The discrepancy between the OAL - nose and the BTO is explained by the BTO being defined as base to bore diameter. This is the approximate point where the bullet would contact the riflings. We used to list the BTO as OAL - nose, but there's a lot of error in that number compared to an actual BTO measurement made with an average comparator because most comparators are close to bore diameter, representing where the bullet would contact the riflings (roughly).

Another thing that's going on here is that since the last QRS was released in 2015, I've upgraded my measurement tools from basic calipers and comparators to a state of the art optical comparator (Keyence IM 6015). This machine provides much more accurate measurements, which in some cases are quite different from the old way of measuring. We have another update to the QRS data planned for next month in which data for all bullets will be from this new way of measuring, and the transition from the old to new will be complete. For now, we've got data out there from both sources, which is another reason for the confusion in this thread.

I apologize for the discrepancies and confusion on this issue. When the QRS update comes out next month, all the data will be updated and self-consistent.

-Bryan
 
Bryan, I think looking at the numbers this bullet is going to seat with about the same bearing surface in the case as the 200H for a given freebore, is that an accurate assessment?

I'm curious because my 200 barrels are throated longer to about a 205 to 210 freebore. My 200H now seats with the bottom of the bearing surface about half way up the neck in a fashion similar to the way the 185Jugg seats with the FTR reamers with a freebore of about 170.
 
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