I am not qualified, nor inclined, to opine on specifics of raising your, or any other's child.
The neuroscientists tell us that a child's personality is largely permanently fixed by age three. But the learning centers continue developing until about age twenty-five. Learning, education, remain plastic for far longer than psychological personality.
The better way to look at the question may be to flip it on its head.
Is it ok to let kids shoot at cartoon figures?
A polka-dot pink elephant? Daffy Duck? Pictures of balloons? Alvin & Chipmunks?
(Ok, on that last one, if the kids see a three foot singing chipmunk, I'd rather they sought out the gun safe-but I may be biased in this.)
There are too many variables for this to have a single, blanket, answer. At least for my 2¢