I presume the question is asking about the US .45 pistol round (the British Martini-Henry rifle also fired a bullet of .45 caliber). In the 1800's, the Colt pistol was made in .45 probably because it was a big round which typically struck the target with enough force to require only one shot. When the US assumed control of the Philippines from Spain in 1898, the US Army was using a pistol in .38 Long, and there were complaints that several shots were required to stop Filippino rebels, so the US Army returned to the .45 for about one more century before exchanging it for the 9mm.
1915
There is no exact date that the staple gun was invented. However, the very first staple gun was made for King Louis XV of France in the early 18th century.
It is believed that gun powder was invented in china sometime between the 10th and 11th century,s.
Brando wink
He invented the first successful machine gun called the Gatling Gun
The value of a Ruger No. 3223 caliper gun depends on its condition. This gun in excellent condition is valued between 489.00 and 569.00 as of 2014.
John Moses Browning invented the pump shotgun and the Colt 45 but there are many other gunmen who have invented others.
The gun was invented it china
It is the measuring instrument it is invented by verniers its error is very small
Gun POWDER was invented by the Chinese
do you know who invented the speed gun
Caliper retaining bolts. Torx T-40 or T-45
In the US, .22 Long Rifle. There are more of them than any other gun.
The nail gun was invented in the 1950's
1115 is when the first gun was invented
Try gun shops, gun shows, e-gunparts.com
The nail gun was invented in the early 1950's