On the rules side: the bullet caliber isn't going to make it in either IDPA or USPSA. 9mm Luger is the smallest allowable caliber. 5.7 won't fly in a steel challange match either because of safety and steel damage.

Short of Bianchi, which I'm not sure they would allow it there either, I'm pretty sure it's unusable in any of the action pistol sports.

On the common sense side: the ammo itself would make it a horrible choice. It's availability sucks, it's cost is high, and it's power factor is very high.

Do you have any other pistols? If so, what are they?