Recently, Sierra Bullets put out an informational publication concerning the topic of temperature effects on bullet trajectory. This topic has been in the mainstream lexicon of precision shooters, hunters, and target shooters for decades. Opinions on the matter range from temperature doesn’t affect bullet flight enough to worry about it, to others claiming a new zero must be obtained for every 20-degree variance in the outside temperature. This post, written by Sierra Bullet’s Chief Ballistician Tommy Todd, is not only informative on the issue, but rather remarkable for its findings.
Sierra Bullets, located in Sedalia, Missouri, is one of the world’s foremost leaders in bullet and cartridge manufacturing. Their 168-grain Boat-Tail Hollow-Point (BTHP) has been the gold standard in precision matches, and law enforcement sniper use for many years. The Federal Gold Medal Match cartridge, using the Sierra 168-grain BTHP bullet, has been the chosen round by F.B.I. snipers for many years.