sry has been a while since my last post..
thanks for your ideas, i am satisfied with my current result although they are still colliding from time to time. But nevertheless my main issue has been solved because the bullets don't create any bulletholes and dust anymore if they collide with each other. I didn't think about pointers, so thanks for the hint tompo
I didn't tried everything because I don't want to change my shooting script anymore. The game isn't a fps anyways, so the current script is ok for me. I will occupy myself with the colliding when i have more time. For now i just want to get things working. If the bullets collide they just remove themselfes and my current explanation for missing bullets is that they are duds