I don't have anything in that caliber, but 12 gauge slugs are just as effective and almost as much fun.

And I'm sure that this has already been said several times in the comments, but
Electrical and mechanical engineers buld weapons, civil engineers build targets.

Joking about shooting the customers. I'd much rather shoot the engineers that designed the laser I build. Looks like someone handed them an optics do-it-yourself kit and told them to make sure they use all the items to design a laser.
At least when I'm out shooting, I can't be thinking about work and find the whole process zen-like and deeply relaxing.