1. The physics affecting the bullet once it leaves the barrel is termed external ballistics . 2. The study of bullet trajectories after they leave the firearm is known as external ballistics . 3. There are three aspects to ballistics : internal ballistics, external ballistics , and terminal ballistics. 4. This particular field of external ballistics is currently ( 2009 ) not elaborately studied nor well understood. 5. For reasons why a smaller diameter projectile can be desirable, see external ballistics and terminal ballistics. 6. Many modern crosshairs are actually range estimation and bullet drop and drift compensation ( see external ballistics ). 7. The limit to bore diameter is generally the sectional density of the projectile ( see external ballistics ). 8. Many of these slugs are saboted sub-caliber projectiles, resulting in greatly improved external ballistics performance. 9. The SWC design offers better external ballistics than the wadcutter, as its conical nose produces less drag than the flat cylinder. 10. During the war Moran worked in rocket development in the Ministry of Supply and later at the External Ballistics Laboratory in Cambridge.
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