i read and hear people saying that their revolver is a "tack driver" and i am just wondering what consitutes it being a tack driver. what would be the distance -10yds-15yds-20yds-25yds? what would be the group size? would a 2 inch group at 25yds count as a "tack driver"? just curious on your opinion on what is a "tack driving hand gun"....