Accession Number:

ADA555975

Title:

More Inaccurate Specifications of Ballistic Coefficients

Descriptive Note:

Research rept. 7 Jan 2010-30 Jan 2012

Corporate Author:

AIR FORCE ACADEMY COLORADO SPRINGS CO

Report Date:

2012-01-02

Pagination or Media Count:

8.0

Abstract:

A ballistic coefficient BC can be determined by using two chronographs a measured distance away from each other and shooting a bullet so the velocity is measured by the two devices. Ballistic modeling software requires accurate measurement of ballistic coefficients to accurately predict downrange trajectories, wind drift, and retained energy. This article presents new measurements for 21 different bullets and shows that BCs can differ significantly from the claims of the manufacturer. These differences can cause significant differences in the predictions of ballistic modeling software. Evidence suggests that these variations are probably not due to excessive bullet yaw.

Subject Categories:

  • Ballistics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE