no no no are you still talking about raycasts?
Most people give raycasts "tracer projectiles", usually at like 200 velocity. Most of the time it's just purely used as a tracer or just cosmetically, because they usually do no damage. One exception (which I'm unsure if it even exists this way anymore) is the T+T2 Sniper Rifle and variants, where it does 1 damage to finish the target off IF it hits.
a tracer projectile obviously doesn't travel as fast as a raycast so that's what you're seeing.