I would be so in the dog house if I shot a watermelon the wife might just never speak to me again. Now for old soft drink cans, milk jugs filled with colored water, water balloons they are all fair game. I like to shoot these with new shooters so they can see some of the power that a bullet has. The clean up is the down side.
Don't question my right to own a gun and I won't question your stupidity not to.
You give Peace a chance, we will cover you if it doesn't work out.