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If you think dumbbells are just for working out, then think again. YouTuber Ballistic Machinist let’s it be known that there is at least one more use for them.

Related: This fella tries to open the trunk of a Buick with a shotgun, let’s see how that works out

Using Detroit Machine Tools’ new line of Auto Mate CNC’s, he was able to fabricate himself some shotgun slugs shaped as dumbbells. Our initial thought was “there’s no way these will work,” but surprisingly they did and rather well at that.

He demonstrated the effectiveness of the shells with some target practice, doing some serious damage to a mini fridge and even blowing a watermelon to smithereens. It’s safe to say that these things are the real deal.