Miss, miss, miss, miss, hit, hit, pause, adjust hit, hit, hit, hit.
Now, the officer could have been firing warning shots first off trying to stop advancement. The officer was said to be beaten, so he could have been cockeyed missing the first 4 and then finally got his bearings,
The first two probably got him in the arm, which wouldn't slow him down, the final four doing him in.
There's too many what if's that lead to a reasonable doubt.