“All revolvers have one chamber,” says James Smith, a gunsmith and master gunsmith at West Point. “That chamber, in the chamber, is called a cylinder. It’s got an outer diameter equal to the diameter of the barrel. In a revolver it’s the .22 caliber.”
“It’s always easy to go on and on about .22 caliber revolvers,” acknowledges William D. Lott, the national firearms industry association’s president. “The vast majority of people are unaware that .22 caliber revolvers have more power when compared to .44-44 or .38-caliber. .22 is one of the two most powerful, powerful ammunition cartridges.”
Smith, the gunsmith, agrees. “It may be a little bigger than some of the .45-caliber ammunition, but .15 caliber is smaller than .22 in terms of the weight of the bullets. A .223 caliber (projectile) is three times heavier than a .22 caliber projectile.”
How do we know that bullets are powerful? The most efficient way to deliver energy from a bullet is to push it against the outside of the bullet case, called the expanding cone. If a bullet hits the outside of the bullet case, that force is dissipated and there’s no more energy stored as thermal energy, so the bullet doesn’t accelerate beyond the speed of sound. (Sound travels at the speed of a bullet.) But if you look at bullet cases closely, you’ll notice a slight curve that goes all the way around the circumference of the bullet case to form the expanding cone. So, theoretically, a bullet would expand in the direction of that curve.
“If you really wanted to go with the maximum power of the bullet, you’d make the expanding cone out of copper,” says Lott. “You could have copper cases, too, but the copper wouldn’t be able to provide the amount of energy that would be required under ideal conditions. In fact, the copper may make the bullet fall apart, making for a much harsher bullet. All other factors being equal, the bullet will expand less than a pure copper case.”
How much pressure on a bullet?
“If you want to know how much pressure a bullet is subjected to, that’s another question you want to look at,” says Lott. “A bullet may have a high jacket volume, but that does not mean that it’s very hot or that it’s compressed with high pressure and high velocity.
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