how to make proper start direction of linetrace

i’m using the third person mode,I tried many ways,start from the muzzleflash socket,or the capsule rotation,and the camera rotation ,but , actually ,I noticed that, when using the anim starter pack ,if you are holding a gun ,it still be some intersection between the gun and the camara, how to fix that ,it’s better if you can post some blueprint screenshot, thank you !I really appreciate your help.