Berger Bullets Tech Data List

Len Backus

Administrator
Staff member
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May 2, 2001
Messages
6,703
Here is an amazing resource that Eric Stecker of Berger gave me when I asked him a question about bearing length and BC of some of his bullets.

You won't believe how much info is in this Excel spreadsheet that you can download and keep on your computer.

  • OAL
  • Boat Tail Length
  • Meplat Diameter
  • Ogive
  • Nose Length
  • Base To Ogive Length
  • Bearing Surface
  • Sectional Density
  • G1 BC
  • Recommended Twist

EDITED ON 6-16-12

I have just uploaded newer data, this time as a PDF file.
 

Attachments

Last edited:

Eric Stecker

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Joined
Jul 27, 2007
Messages
292
Thank you Len, for putting this resource on your forum. To save a few folks from rushing to conclusions, the dimensions listed are for reference only and may vary slightly from lot to lot. If you bullets don't match the exact dimensions listed it does not mean that you have bad bullets.

Regards,
Eric
 

jerrschmitt

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Joined
Feb 28, 2009
Messages
116
Location
Superior, WI
Len, your timing is perfect. I just got home with a few boxes of Berger bullets for my 6BR and intended to look up some data on them. You just saved me hours at least.
 

LouBoyd

Well-Known Member
Joined
Oct 15, 2007
Messages
770
Location
Patagonia Mountains, Arizona
Thank you Len, Eric, and Berger Bullets!

If all bullet manufacturers would provide such useful informaition handloading would be much easier and safer. I know of no other manufacturer who publishes reasonably accurate bullet dimensions. Few even give the bullet length.
 

4bycamper

Well-Known Member
Joined
Apr 11, 2009
Messages
622
Location
Eastern Colorado
Thanks Eric and Len.

I've been looking for a new Elk hunting bullet for my 270 WSM Winchester.
This rifle likes 150 SGK but hates 150 TSX.

Think I'll try the Berger 150s.


Al
 

Bart B

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Joined
Dec 25, 2005
Messages
2,746
How does Berger determine their bullet's BC?

Calculations from bullet's physical properties (weight, dimensions, center of mass, etc)?

Time of flight between two screens at different velocities?

Just curious.
 

BryanLitz

<b>Official LRH Sponsor</b>
Joined
Mar 8, 2007
Messages
633
Bart,

The short answer is that we fire the bullets and measure their time of flight in 200 yard increments out to (typically) 600 yards. G1 and G7 BC's are derived from the muzzle velocity and time of flight data, corrected to ICAO standard sea level conditions.

You can read more (The long answer) on these two articles on our web log:
Berger Bulletin Blog Archive Why Our BC Numbers have been Lowered (Corrected)
and
Berger Bulletin Blog Archive A Better Ballistic Coefficient

Take care,
-Bryan
 

RBrowning

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Joined
Feb 8, 2002
Messages
247
Location
Jackson MI
Brian,
Thanks for sharing the data, it helps to overcome some of the "black art" when there is real information available. But I do have a question about the suggested twist rates. What velocity are those based on? Isn't the real factor for stability RPM? As the velocity increases the required twist rate would decrease in order to meet the RPM for stability.

The reason I am asking is that I would like to shoot heavier bullets out of my 22-250 but it only has a 1:12" twist and most of the 22 caliber bullets that I would be interested in require 1:8" but I would guess that this is based on the slower but more popular 223 REM. I'm just trying to figure how heavy of a bullet I should be able to stabilize in my 22-250.

Thanks for any input you can share.

Rick
 

BryanLitz

<b>Official LRH Sponsor</b>
Joined
Mar 8, 2007
Messages
633
Rick,

The recommended twist rates are based on the slowest speeds the bullets are likely to be fired at. However, increasing muzzle velocity has less of an effect on stability than is commonly thought.

It's true that RPM's increase 1:1 with muzzle velocity, but stability does not. The reason is because the higher velocity bullet has more overturning torque applied to it's nose because it's flying faster (higher speed = higher drag and overturning torque[/i].

If you send me an email ([email protected]) I can send you a stability calculator. You can play around with muzzle velocity and the other variables to see how much they affect stability.

Take care,
-Bryan
 

nfhjr62

Well-Known Member
Joined
Apr 17, 2008
Messages
404
Location
Philadelphia Pa.
Thanks Len for the info, just when i'm looking for load info on .223 i find this info and Thank You Brain and Berger Bullets you are not only a fine Ballistician but a general all around Man
 

Snaz

New Member
Joined
Oct 3, 2011
Messages
1
Relatively new to reloading, looking for suggestions on my charge. I am shooting a 7mm mag, Berger 168 gr. VLD Hunting bullet, with H1000 powder. Thanks Fellas
 

Eric Stecker

Well-Known Member
Joined
Jul 27, 2007
Messages
292
Steyr,

You can get data now by sending an email to Walt Berger at [email protected]. List the cartridge you are loading including the bullet and powder if you've selected one already.

We are in the editing process for our manual as well. I can't promise when the manual will be ready but we are in the final stages.

Regards,
Eric
 

DazzH

Member
Joined
Jun 19, 2009
Messages
14
Location
Tauranga, New Zealand
I have found the excel document very helpful in the past and have just started a new 30 cal build. I was ready to order a the chamber reamer when the new Hybrid line was introduced. Does anyone know if the same info is available for these bullets? and also if there is a plan to offer them as a hunting bullet?

Regards,
Darrin.
 
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