The F-16C HAF Block 50 manual lists on Page B1-3 Empty Operating Weight of 19,261lbs.  And it says that this weight is used in sample problems to prevent reworking.  The other HAF weights of 20,200lbs, 20,000lbs, and 21,200lbs (listed under Drag Indexes and Weights pages) are applied to Greek Peace Xenia II & III  aircraft only and they are heavier than the standard US jet. .  In addition, they have a MTOGW of 44,900lbs and not the standard Block 50 (US) MTOGW of 42,300lbs.  The 26,000lbs turn rate chart does not represent a US Block 50 at 50% internal fuel, 4 Aim-120, 2 Aim-9, full gun ammo.  The actual jet,  with that load out total, weighs in nearly 700lbs lighter than the 26,000lbs DI 50 turn chart.  Hence the true turn rate is about .4 above 14.25dps or about 14.6dps.   This has been a misconception for some time.  

In reality, comparing a lighter US Block 50 with an empty weight of 19,261lbs to an F-14B looks like this.   (Sustained Turn Rate is 14.1dps for the F-14B and about 14.6dps for the F-16C)  So If the manual from the manufacturer uses the 19,261lbs Operating Empty Weight figure in computing its load out problems -so should everyone else.. 

F-14B vs F-16C turn rate: