Projectiles

Related images: Projectile images

Projectiles, unlike hitscan bullets, do not travel instantaneously across the map but rather at a preset speed and often subject to engine physics. This speed also differs between the weapons used to launch the projectile. Projectiles are not affected by Lag compensation, likely due to technical limitations surrounding the engine's physics applied on projectiles.

The Compression Blast ability of the Flamethrower and Degreaser can reflect all projectiles save for syringes and Sandviches. Once reflected they will switch ownership to the Pyro whom reflected the projectile (unless said projectile is a stickybomb -- in which case it is simply rolled along the ground), and deal Mini-Crit damage on enemies they hit. In addition, when colliding mid-air some projectiles may deflect opposing ones, or destroy them completely.

Projectiles

Projectile	Rocket	Grenade	Stickybomb	Arrow	Jarate	Baseball	Flare	Syringe	Mad Milk	Sandvich (dropped)
Speed (HU/s)	RL/BB/RJ: 1100 DH: 1980 SG: Unknown	1065	Unknown (Varies based on charge)	1875 (Varies based on charge)	Unknown	1940	1450	SG/BS 990	Unknown	Unknown
Arcs***	No	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes	Yes
Sticks****	No	No	Only to world	Yes	No	No	No	Only to world	No	Only to ground where dropped
Reflected by	Compression blast	Compression blast Baseballs	Compression blast	Compression blast	Compression blast Baseballs	Compression blast	Compression blast	None	Compression blast Baseballs	None
Destroyed by	Arrows*	None	Bullets** Stickybombs (Scottish Resistance)	Arrows	None	None	Flare	None	None	Eaten by non full health player or a Heavy with equipped Sandvich and non full bar.

*Destruction of Sentry Rockets is unknown

**Only after attaching to a surface

***Determines if the projectile travels in a straight line or if it slowly arcs to the ground

****Determines if the projectile sticks to a surface

Hit Boxes

The hitboxes used for projectile weapons differ from those used for hitscan ones. Whereas the hitscan ones consist of several small rectangulars "wrapped" tightly around each class's model, the hitboxes for projectile weapons are larger, and consist of only one box that covers both the model and some of the space surrounding it. This is the reason why seemingly failed shots from projectile weapons (e.g. Huntsman) end up hitting their target.