I prefer to use the .410 cause you can shoot while they are stopped or if they start to run. We have a couple of pump mossberg that work awesome. Last year we didnt have a lot of rain so there wasnt a lot of acorns or pecans, during deer season had them coming into my corn in herds. There was one time I counted 23 squirrels gobbling down corn. Wanted to take my .410 and see how many I could get at once but never did. Even had a bobcat that would come see in the brush, wait for a bunch to get out there and then make a mad dash to try and grab one (all this less than 25 yards from the blind)