TomD
e publius unum
Was reading on the characteristics of the German Reinmetall 120mm smoothbore used in most western tanks and found this interesting passage.
Most matches are within those temperatures----
From Wikipedia:
"Weighing in at 8.35 kilograms with a 38:1 length to diameter ratio and with a muzzle velocity of 1,750 meters per second (5,700 ft/s), the projectile has an effective engagement range of up to 4,000 meters (4,400 yd).[1] A further development, called the DM63, improved upon the round by introducing a new temperature independent propellant, which allows the propellant to have a constant pattern of expansion between ambient temperatures (inside the gun barrel) of anywhere between −47 °C (−52.6 °F) and +71 °C (160 °F). The new propellant powders, known as surface coated double base (SCDB) propellants, allow the DM63 to be used in a wide variety of climates without a negative impact on the projectile's performance."
Most matches are within those temperatures----
From Wikipedia:
"Weighing in at 8.35 kilograms with a 38:1 length to diameter ratio and with a muzzle velocity of 1,750 meters per second (5,700 ft/s), the projectile has an effective engagement range of up to 4,000 meters (4,400 yd).[1] A further development, called the DM63, improved upon the round by introducing a new temperature independent propellant, which allows the propellant to have a constant pattern of expansion between ambient temperatures (inside the gun barrel) of anywhere between −47 °C (−52.6 °F) and +71 °C (160 °F). The new propellant powders, known as surface coated double base (SCDB) propellants, allow the DM63 to be used in a wide variety of climates without a negative impact on the projectile's performance."
