Berger Flat Base Target Bullets are often used by competitive benchrest shooters who seek the highest accuracy possible. Flat Base Target Bullets are often used out to mid-range distances of 300 yards or more where a boat tail is not applicable. Berger Flat Base Target bullets are match-grade quality and utilize a tangent ogive bullet design which makes these very easy to load, tune and shoot. Highly accurate, the Flat Base Target uses J4 Precision bullet jackets for construction. J4 Precision Jackets have a Total Indicated Runout (TIR) of +/- .0001 and extremely tight manufacturing tolerances.
Big Book Catalog, Issue:68, Page:541
Sinclair, Issue:5B, Page:102