Give the bullet an instance variable like isShooting, set it to true on creation.
+isSoothing = true
+Every Tick
-> Set Bullet Position lerp(distance) //If you need help with the parameters say it and dont forget dt for bad pc?s
+On collide Bullet with X
-> Do whatever you want
+Bullet is outside Layout
This are just basics, if you need more we will need more informations.