HP Ammo

A hollow-point (abbreviated HP) bullet is an expanding bullet that has a pit or hollowed out shape in its tip intended to cause the bullet to expand upon entering a target in order to decrease penetration and disrupt more tissue as it travels through the target. In essence, HP ammunition has two interrelated purposes: to increase its size once within the target, thus maximizing tissue damage and blood loss or shock, and by remaining in the target to expend all of its kinetic energy in the target, some of which will be lost if the bullet continues through the target.

Insurgency

HP Ammo
General information
Type	Ammo
Operators	Security Forces All classes Insurgent Forces All classes

HP ammo is an ammo type featured in Insurgency. It is highly effective against flesh targets (i.e. arms and legs), but deals slightly reduced damage to armored targets (i.e. head and torso). In addition to modifying bullet damage multipliers, HP ammo usually lowers a bullet's penetration power and sometimes modifies bullet damage models, as in the Mk18.

Performance

HP ammo always increases the damage multipliers on arms and legs, usually to 2 and 3, respectively, with the exception of the UMP-45, which increases damage multipliers on arms and legs to 2.5 and 4, respectively. It also reduces the damage multipliers on the head, chest, and stomach to 0.9, 0.75, and 0.8, respectively. This is compared to standard ammo, which usually has a standard damage multiplier of 1 for all hit groups (excluding SMGs, shotguns, and pistols).

HP ammo also tends to have reduced penetration power at all ranges compared to standard ammo, with the exception of the M1A1 at long range and the AKS-74u at all ranges, which actually receive penetration power bonuses when using HP ammo.

Advantages

• Hits to flesh targets 200-400% as effective
• Cheaper supply cost than AP ammo

Disadvantages

• Hits to armored targets 75-90% as effective
• Reduced penetration power on most weapons.

Damage Model

Caliber	Damage Drop Start	Damage Drop Shift	Damage Drop End	Damage Multiplier	Penetration Drop Start	Penetration Drop End	Suppression
9x19mm HP (Pistol)	10" @ 60dmg	N/A	8000: @ 32dmg	Head 0.90 Chest 0.75 Stomach 0.80 Arms 2.00 Legs 2.00	10" @ 150 Power	8000" @ 75 Power	20
.45ACP HP (SMG)	10" @ 76dmg	N/A	8000" @ 32dmg	Head 0.90 Chest 0.75 Stomach 0.80 Arms 2.50 Legs 4.00	10" @ 500 Power	8000 @ 300 Power	30
5.45x39mm HP (SMG)	10" @ 82dmg	N/A	8000" @ 150dmg	Head 0.90 Chest 0.75 Stomach 0.80 Arms 2.00 Legs 3.00	10" @ 200 Power	8000" @ 150 Power	30
5.56x45mm HP (Assault Rifle)	10" @ 110dmg	2700" @ 80dmg	12000" @ 46dmg	Head 0.90 Chest 0.75 Stomach 0.80 Arms 2.00 Legs 3.00	10" @ 400 Power	12000" @ 150 Power	50
5.56x45mm HP (Mk18)	10" @ 85dmg	N/A	12000" @ 46dmg	Head 0.90 Chest 0.75 Stomach 0.80 Arms 2.00 Legs 3.00	10" @ 400 Power	12000" @ 150 Power	50
5.56x45mm HP (M249)	10" @ 110dmg	2700" @ 80dmg	12000" @ 46dmg	Head 0.90 Chest 0.75 Stomach 0.80 Arms 2.00 Legs 3.00	10" @ 400 Power	12000" @ 150 Power	50
.30 Carbine HP 7.62x33mm HP	10" @ 100dmg	N/A	12000" @ 80dmg	Head 0.90 Chest 0.75 Stomach 0.80 Arms 2.00 Legs 3.00	10" @ 400 Power	12000" @ 200 Power	60
7.62x39mm HP	10" @ 100dmg	N/A	12000" @ 80dmg	Head 0.90 Chest 0.75 Stomach 0.80 Arms 2.00 Legs 3.00	10" @ 450 Power	12000" @ 250 Power	60

Compatibility

HP Ammo is not compatible with sniper rifles or shotguns.

Trivia

• Required points to use HP Ammo were reduced on 2015. 07.27 patch.