tModLoader - Need help with making a weapon similar to arkhalis.

I want to make a sword have a swinging projectile like Arkhalis, I made the projectile with the help of some older post on this forum. It's swinging, but my problem is, that I have no idea what to change in my code to make the "swing speed" lower (kinda like the "Murasama" from Calamity mod

Terraria Breaker Blade

tModLoader - Terraria Overhaul - Gameplay enhancements and much

UPGRADE to Arkhalis! Devil's Sunrise Sword! Terraria Calamity

Steam Community :: Guide :: Terraria Boss Ideas 12 - MoR Edition

Wasp Gun - Terraria Wiki

Nebula Blaze - Terraria Wiki

How to get Arkhalis in Terraria

Found THIS in the Enchanted Sword Shrine instead of the Arkhalis

Arkhalis - Official Terraria Mods Wiki

How to get Arkhalis in Terraria

A weapon and projectile similar to arkhalis · tModLoader

Old Nail (Conquest) - Official Terraria Mods Wiki