The 
ParticleSystem Renderer Settings
I have tried multiple methods over the past 24 hours and have now got myself lost even though I'm sure its something simple, any help would be much appreciated.
Sorry about the image sizes scaling them down messed with the text
Edit: The editor and project settings are 2020.3.15F2 using URP
CodePudding user response：
I finally managed to figure it out and as no-one was able to answer I will add the solution in case it can help someone else.
1: I inverted the hit.normal when gettting the rotation.
if (Physics.Raycast(Camera.main.transform.position, Camera.main.transform.forward, out RaycastHit hit))
{
Quaternion rot = Quaternion.LookRotation(-hit.normal);
ParticleSystem.EmitParams emitParams = new ParticleSystem.EmitParams
{
position = hit.point 0.01f * hit.normal,
rotation3D = rot.eulerAngles
};
_bloodshotParticles.Emit(emitParams, 1);
}
2: Changed the render type from Billboard to Mesh with a Quad set.
