Well, I wanted the aim-dummy’s location to be raised slightly above the surface of the actual impact hit, and that’s how you do that. It just makes grid-rounding easier to figure out in my mind. Don’t think it would cause a problem…
And the trace should be starting 10 units in Front of the camera, no real reason, but I didn’t want to deal with ignoring a head-model if I stick one on the player HMD later. I can always just set that to the camera location exactly. But that shouldn’t matter either I wouldn’t think. 