External Ballistics

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Update Regarding the .338 Hybrids

As expected, the release of the new 300 grain .338 Hybrid bullets has made quite a splash. The purpose of this bulletin is to share some facts that have been learned about this bullet since its release. There are two major facts that I’ll elaborate on. 1) The BC of the bullet is being revised, and 2) The bullet has limitations regarding its structural integrity. Revised BC Assessment For unknown reasons, the original BC test produced results that were not repeatable for this bullet. Upon releasing these bullets to the public, we started to hear that trajectories predicted with the advertised BC's were not matching [...]

Change to 6mm 105 grain VLD Target bullet

Overview In our continuing effort to provide shooters with the best possible bullets and information, this article will address a recent change made to one of our most popular bullets: the 6mm 105 grain VLD Target bullet. Note that this change applies to the 6mm 105 grain VLD Target bullet only, not the VLD Hunting bullet. Making bullets is all about consistency. Precision depends on it, shooters demand it. Occasionally there are reasons to change something in the bullet making process which results in new bullets being different than the old. We feel it is our obligation to communicate when these changes are made, the [...]

A Better Ballistic Coefficient

For centuries now, science has been helping us gain a more accurate understanding of our world. The branch of science we care about as shooters is known as ballistics. The science of ballistics is well developed and understood by those who study it, but the tools and information being used by average shooters is not necessarily optimal for the shooter’s applications. In other words, there is a better, more accurate way for shooters to use ballistics to help them predict trajectories and hit targets. The purpose of this article is to present a better way for shooters to calculate ballistics. What is a Ballistic Coefficient? [...]

Twist requirement for the new .204 caliber 55 grain Long Range BT Bullet

The data in this article is out of date. For up to date information on twist rates, please visit our twist rate calculator at https://bergerbullets.com/twist-rate-calculator/. As shooters of low drag spin stabilized projectiles, we’re compelled to understand the twist requirements of our bullets. In most cases, this is a simple matter of looking up what the manufacturers recommended twist rate is and making sure our barrel satisfies it. Occasionally you can get away with using a slower twist than what’s recommended if you’re shooting in favorable conditions. The manufacturers recommended twist rate is intended to ensure stability for any and all possible shooting situations, which [...]

Why Our BC Numbers have been Lowered (Corrected)

Walt Berger established a culture that makes the success of the rifle shooters our highest priority. This core belief influences all our efforts. When we decided many years ago that we wanted to publish our G1 BCs for all of our bullets we had a bit of a problem. We do not have access to a firing range that would allow us to establish fired BCs (turns out that this was a good thing but I’ll get into that later). Walt contacted his friend and famed Ballistician Bill Davis to ask him how we can solve this challenge. As it turns out Bill was working [...]