Error with hit?

Hi all…
I hav created the bullet that move in the space when i shot. But i can’t hit the enemy from the distance…only from point-blank…
Why? i ve only done the hit component,cast to zombi and print string…
I ve tried attacking the sphere collision to the bullet but still doesn’t work…
This is the shot…
http://s29.postimg.org/g38n2qz8z/Immagine.jpg
Why when i shot a little bullet my character is pushed behind?

Looks like you only posted the blueprint that spawns your bullet. From the looks of this your bullet isn’t actually moving which is probably why collision only works when you’re right next to your target. My guess is that you’re spawning the bullet on your target, and it works.

Can you show us how you’re moving the bullet?

this is the movement of the bullet…
If i spawn a big one it moves…
If i spawn a little one i think he stayed, right?
Because i can’t hit the target…
But with the big one too i can’t hit my target…maybe only the bullet(mesh) go on, but the collision?
Lie in the spawn?