Ummm…. You “punched” an inanimate object to the point to where you injured yourself, and now you’re going to shoot it with a gun? Umm. I feel like that perhaps someone with your lack of impulse control perhaps shouldn’t own firearms… ?
Try drop starting a saw and have it kick back on you, then you'll know what I mean by punched the saw.
You can replicate this by using a 10lb bowling ball on a bungee cord for a yo-yo.