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A 90 mm rifled cannon because the inside is grooved.
76 mm = 3.0 inches (approx). 250 mm = 9.8 inches (approx).
2.992125984 in Direct Conversion Formula 76 mm* 1 in 25.4 mm = 2.992125984 in
76 square mm
76 millimetres is equal to 7.6 centimetres, or 2.99 inches.
1 cm = 10 mm, so 76 cm = 760mm
0.1 atm equals 76 mm of Mercury pressure.
.76- .83 mm thick
Perhaps it was the M65 atomic cannon, a 280 mm towed gun that fired a nuclear tipped projectile.
7.6 cm 1 cm = 10 mm 1 mm = 0.1 cm
2.992125984 in Direct Conversion Formula 76 mm* 1 in 25.4 mm = 2.992125984 in
The Mitsubishi A6M Zero had two 20 mm cannon and two 7.7 mm (.303 in) machine guns .