True but all the pellets listed are round nose pellets. So the B/C. can't to much different. other than the size of the .25 pushing is self through the wind.
The .25 lost almost half it's energy at 50 yards but the 20 cal lost only a little over two pounds of energy at the same distance. The .20 has more energy at 50 yards than the .25 has at 50 yards.
At 100 yards the .25 has lost over 3/4's of it's energy, and the .20 has lost less than half.
The velocitys are a drastic difference too, the .25 lost 400fps. and the .20 lost only 220 fps.
The .25 is dropping like a rock after 50 yards by looking at the velocities.
I know that the .20 caliber Shadow I re-barreled is shooting 11.2 FTS's at an average of 820 fps and it's a killer at 50 yards, Shoots 14.3 CP's at just under 700 fps.
But the FTS's shoot a lot flatter and hit harder at 50 yards, at least by looking at how deep the imbed themselfs into a 4X4.