Why do people using large noisy drills often wear ear muffs?

What is the age of Winchester mod 12 12 ga serial number 1569107? Replacement parts for a bryco model 48? What is the value of a rossi 38 special revolver serial number AA167440? What is a 357 astra R series gun worth? The marlin model 10 has a engraved squirrel not chipmunk where can you find firing pin for this 22? Do you have reloading data for hornady 160 gr FTX bullets in 308 cal? How long is the barrel on a sterling model 1400 22 long rifle? How much are h hargrove serigraphs worth? What years did sears and roebuck produce shotguns? What is the stock symbol for Hornady Mfg? What is the plot for framed? What is the best 45 cal auto pistol? What year is a Connecticut Valley Arms 50 caliber serial number 0028905 and what is it worth? Where can you find the serial number on an Ithaca Shotgun? What is another word for compound bow? When was the Colt army special 32-20 made? What does a disconnector do when a 1991 type pistol is fired? What type of ammo for Hopkins and Allen 38 safety police revolver? How many browning BDA 380's were made in 1978? What is a sport king speachel 22 model A100?