12. CHANGING FROM 7.62 MM TO 5.56MM
Influenced by the experience gathered during World War-II and its after-effects, a new concept took birth and development was started at a fast pace in early sixties for production of light weapons of caliber 5.56 mm (or .223 inch). Two main reasons being, saving in materials used for ammunition and reducing the load carried by a soldier. Not much argument can be forwarded why 5.56 mm or .223 ich caliber was selected and why not little less or more. However, in small caliber there is a drawback that bullet, being of smaller weight, does not retain accuracy of 7.62 mm bullet at the long range, but the war tacticians are of the view that 5.56 mm bullet still serves the purpose.
13. THE LAST WORD
This is how the bamboo-fire-arm developed to muzzle loader, then the single shot rifle and progressed through various stages through centuries to take the present day shape of handy, easy to operate, high accuracy weapons with high rate of fire. The primitive muzzle loader had a lapse of minimum 3 to 5 minutes between two firings. With single shot bolt action rifle, a maximum of 30 to 40 rounds per minute could be attained but it all depended upon the training of the shooter. The current machine guns have a firing rate of 1000 to 1300 rounds per minute. If guns are coupled on a single mount like MK-20 Rh-202 and made to operate in a sequence by electronic-device, four guns put together can give a rate of fire of 3200 to 4000 rounds per minute.
If photographs of a moving object are taken at a rate of 1080 or more snaps per minute and projected at the same speed, movie effect is generated. So, watching bullets, being fired at a rate of 1100 to 1200, rounds per minute, will appear as if a metallic wire is gushing out of the muzzle of the machine gun.