The most common definition of “caliber,” as it pertains to guns, is about as straightforward as you could want it to be: Caliber simply mean the diameter of the hole in a rifle or pistol barrel. Yet ...

If you want to squeeze off a few rounds from a .905-caliber rifle, you'll need two things: muscles and cash. An Ohio-based gun company has developed the world's first .905-caliber rifle that - at .905 ...

Snipers, armed with ballistic data based on previous engagements, can often predict how a bullet will travel under local conditions. One of the most challenging roles in ground units is that of a ...