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| {{Otheruses|the stat|the item|Bullet Lifesteal (item)}}
| | #REDIRECT [[Lifesteal#Bullet Lifesteal]] |
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| '''Bullet Lifesteal''' is a stat that causes a percentage of bullet damage dealt to be regained as health.
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| == Math ==
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| Despite being presented in-game as +X% Bullet Lifesteal, different sources of bullet lifesteal stack multiplicatively, not additively. With <math>n</math> different sources of bullet lifesteal, final bullet lifesteal <math>BL_F</math> is given by:
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| <math>BL_F = 1 - \prod_{i=1}^n (1 - BL_i)</math><br/><!--this is rounded, but the game displays two different calculations where one is rounded up, and the other is rounded down-->
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| where <math>BL_i</math> is the bullet lifesteal provided by the <math>i</math>th source.
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| ===Example===
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| With 10% Bullet Lifesteal from [[Crippling Headshot]] and 35% Bullet Lifesteal from [[Leech]], final bullet lifesteal is:
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| <math>BL_F = 1 - (1 - 0.10) \times (1 - 0.35) = 41.5%</math><!--the stat ingame says 42%, but the calculation on hover says 41%-->
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| Note that the in-game user interface is inconsistent in how it rounds the final number.
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| == Sources ==
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| {{Item stat table|Bullet Lifesteal}}
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| {{Stat navbox}}
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