hevi shot count?

[whitemarlin]

12ga 870 express with a 28" bbl and a IC .665 choke all shots at 40yds 10" circle

#1- 3" 2oz #6's hevi             #2- 3" 2oz mag blend hevi
shot 1- 159                            152
shot 2- 170                            195
shot 3- 167                            179
shot 4-  xxx                            176
Gun was deepcleaned  and then cleaned with bore snake every few shots, i also shot the #6's first.
how do these numbers compare to others, and why would the numbers jump from the first shot on the mag blends, i do remember running the bore snake before i shot that shot?

[bird]

Could be a wide variety of reasons for the jump in numbers.  Could be anything from it being that particular shell, the choke, you flinched, a slight change in wind, point impact was off just a tad, the barrel cleanliness was slightly different.  Who knows! 

Looks like you got some great numbers though.... 

bird