A number of shots fired at a given range at one target & with one sight setting, with either rifle or handgun, to determine the accuracy of either the gun or the ammunition. With a handgun the most common range is probably 25 yards. A two inch group is generally considered good.
Stevie Wonder plays a Hohner Chromatic Harmonica. He mostly plays the Super 64x chromatic which i recentally bought and it is amazing. The quality of sound of smoothness is incredible. I would recommend it to anyone playing the harmonica.
However, bending the 3 draw allows the player to play a minor third (or a blue third), allowing a player to use a C harmonica to play in G mixolydian or G minor. Blues players can also play a tritone in this position by bending the 4 draw. See a more extensive discussion of this position at the article on blues harp.