Approximately how far can a 12 gauge sabot slug travel unobstructed when fired level from sitting height?

When fired level (barrel is paralell to ground) slug begins to fall as soon as it leaves the barrel. Assuming ABOUT 3 feet above ground, and that it takes ABOUT 1/10 of a second for a falling object to drop that far, and that slug is moving ABOUT 1900 fps when fired, it should hit the ground at ABOUT 190 ft. This will vary depending on slope of ground, velocity, height above ground- and whether recoil caused the barrel to rise above level.