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Shotguns intended for defensive use often have cylinder or improved cylinder chokes for the widest shot pattern at typically short defensive ranges; "cylinder barrels" have no constriction. A skeet shooter shooting at close crossing targets might use 0.13 mm (0.005 in) of constriction to produce a 75 cm (30 in) diameter pattern at a distance of ...
On average, U.S. petroleum refineries produce about 19 to 20 gallons of gasoline, 11 to 13 gallons of distillate fuel diesel fuel and 3 to 4 gallons of jet fuel from each 42 gallon (152 liters) barrel of crude oil. The product ratio depends upon the processing in an oil refinery and the crude oil assay. [13]
Attempts to sell 3- or 4-liter jugs of milk, instead of gallons (3.785 L), have been largely unsuccessful, and such bottles are rarely seen in the United States; milk remains sold in binary divisions of the gallon, with half-pints, pints, quarts and half-gallons being the primary sizes.
Limited production runs of Glock 19 and Glock 17 conversion barrel kits allowed these pistols to be converted to fire .22 TCM by replacing the barrel and recoil spring (rated at 11 lbs). This led to the development of the .22 TCM-9R variant, which uses a shorter bullet and overall cartridge length compatible with Glock and other magazines ...