[powerstrokin73]

Now i might get shunned for this but i always used a 22lr and many times a 22wmr to rid my pond of the little s**ts BUT, i shot them as they were climbing out of the water on the shore or in the grass on the shore. never in the water while they were swimming there was a house about 500 feet behind my pond and i was shootin from the house that was roughly 15-20ft higher then the surface of the pond. as said before its an ongoing process there is always some that find their way to the pond. ALSO, my pond was 5ft lower then the rest of the yard around it. I definatly don't recomend shootin them while swimming, the whole solid backstop thing is what i went by.