The muzzle velocity may also be corrected for firing at the different temperatures. Some powders vary more then others and the correction factor in the program is adjustable for the different type of powders. This ballistic program allows the user to make this type of table for any shooting distance. Great table for Varmint Hunters. The table shown is for a 308 Winchester using a 180 grain Sierra MatchKing with a muzzle velocity of 2550 fps.
Temperature affects the speed of sound and the air denisty.
The table shows the affect on bullet velocity at the target distance. The speed of sound is also shown in the left column. The muzzle velocity may also be corrected for firing at the different temperatures. Some powders vary more then others and the correction factor in the program is adjustable for different type of powders. This ballistic program allows the user to make this type of table for any shooting distance.