Base Damage at 100% variance mark =

EDPS * (your WS/target AF) * (1-absorb) * slow weap bonus * SPD * 2h weapon bonus * Arrow Bonus

EDPS = effective dps of the weapon

For base damage this is (clamped factor and weapon condition/quality)

For cap damage this is (clamped factor only)

Condition and quality of the weapon will affect effective damage in the following way :

Effective dam = Clamped Damage * Quality(%) * Condition(%)

The clamped damage is your maximimum allowed damage at your current lvl:

Clamped Damage = 1.2 + LVL * 0.3

2h weapon bonus = 1.1 + (0.005 x spec)

SLow Weapon bonus = 1 + ( (spd – 2) x 0.03)

SPD = listed weapon speed.

Damage Cap = EDPS * SPD * 3 * (1 + (SPD – 2) * .03) * (1.1 + (0.005 x spec) )

2h weapon bonus (note: when the weapon is a two hand weapon, the cap uses the 2h weapon bonus formula also.

Arrow Bonus =

0.85 for (light damage) Blunt Suffixed arrows
1.0 For (medium damage) normal arrows
1.25 for (Extra-Heavy Damage) Broadhead Suffixed arrows

To calculate the effects of relics, base character resists and realm abilitys that add resists you would perform the following calculation:

Effective DPS * (your WS/target AF) * (relic bonus) * (1-absorb) * (1-base resists) * (1-RA resists) * slow weap bonus * 2h weapon bonus * SPD * Arrow Bonus

Example:

Attacker has 2000 weaponskill, 65 composite bow spec, a 5.5 speed bow with 16.0 effective dps, using blunt footed flight broadhead arrows, has no relics, and is attacking a chain using target with 635 af, 20 character resist, 20 RA resist.

16.0 * (2000 / 635 ) * 1.0 * ( 1 – .27 ) * ( ( 1 – .20 ) * (1 – .20) ) * 1.105 * 1.425 * 5.5 * 1.25 = 254.8759937