Isnt it a federal offence to deface $? Bota is a alpha boi.
Given how some people shoot, that's not going to be a major issue!
Yes, it's illegal to intentionally deface, mutilate and/or destroy money (legal tender), whether paper or coins.
However, context matters. If you are using the coinage to make money off government currency (selling coin jewelry, etc.), or defacing the money in a way that makes its value higher (restamping a Kennedy half dollar to resemble a dollar), or selling the base metal for its intrinsic value, you might be a felon.
Modern coins have less valuable metals vs. gold and silver, so the value of the metal is less than the face value of the coin. Prevents people from doing crap like selling pennies to recyclers for the copper. Face value of the pennies is greater than the copper value.
If you're destroying the coin, that can also be illegal. Bills and coins must remain intact sufficiently so users can tell what they are. There is a US Mint program for trading your demolished or bent coins for replacements. Go to their website if you want to try and do that.
I'd rather put those coins in a homeless man's collection can and use something else for targets, like maybe ....
https://www.americanmint.com/barack-obama-commemorative-coin-us-1701628