Why firstpersoncharacter can not walk through the imported fbx model.
The bullet couldn’t shoot througt the
model.
Check your collision profiles and presets, the imported mesh may be set to ignore or overlap projectiles but not pawns. Or it has collision in that area and your projectile is actually bouncing off of it, in which case open it in the mesh editor and click the button to show collision, if it does in fact have collision in that area you will need to edit you collisions in your model editing program or create a custom collision in the engine.
After a second look your projectile is behaving as it should and is bouncing off the mesh so you should definitely take a look at your collisions for the mesh and edit them accordingly.
Follow your instruction the character could walk through the fbx model.
But the character should walk through the space not the structure (wall).
How to set it?
You need to edit your collision meshes in your modeling program
Thank you so much ! : )