Best crit weapons

Largest average gain from crits at +30% Crit Chance

50% base crit chance and a ×4 multiplier: with 30 more Crit Chance every hit averages 3.40 times its normal damage. It reaches 100% crit at +50 Crit Chance.

Rule

Crit chance on a weapon = its own chance + your Crit Chance stat. A crit deals round(hit × multiplier), so the average hit is × (1 + chance × (multiplier − 1)). Chance above 100% is wasted. Structures cannot crit unless you own Pile of Books. Source: datamined (weapon_service.gd, unit.gd).

#	Weapon	At +30%	Chance	Multiplier	At 0
1	Knife IV	×3.40	50%	×4	×2.50
2	Sniper Gun IV	×2.50	20%	×4	×1.60
3	Grenade Launcher IV	×2.25	20%	×3.5	×1.50
4	Tranq Rifle IV	×2.25	20%	×3.5	×1.50
5	Drill IV	×2.20	50%	×2.5	×1.75
6	Blowgun IV	×2.10	25%	×3	×1.50
7	Flail IV	×2.05	5%	×4	×1.15
8	Icicle IV	×2	20%	×3	×1.40
9	Crossbow IV	×1.94	45%	×2.25	×1.56
10	Awl IV	×1.90	30%	×2.5	×1.45
11	Screwdriver IV	×1.90	30%	×2.5	×1.45
12	Claw IV	×1.82	25%	×2.5	×1.38
13	Whip IV	×1.80	50%	×2	×1.50
14	Gatling Laser IV	×1.80	10%	×3	×1.20
15	Scissors IV	×1.75	20%	×2.5	×1.30