Years of police range instructor, only used 00 9 pellet load and or slugs. At 25 yards few shooters will get more than a few pellets on target. Cannot remember the spread patterns out of the 18 and 20 inch barrels. 1 hit is all it takes with 00 unless it's outside the kill zone. 15 yards a good shooter will get 100% hits on a full size human target. I remember a hail mary 00 shot through a rear van window, taken by a cop, 1 pellet hit bad guy in head, he was DOA. Cannot remember the range, thinking about 1 city block.