Precision table

Correct at 2.2_Jan_11_2008

Compares direct fire weapons (excludes grenade launcher, for example).
weapon spread is intrinsic to the gun. it is the minimum spread, the limit which cannot be improved with better actor statistics (it is improved by crouching).
spread50 is the spread modified by firedef.crouch (ie assumes the actor is crouching), using an accuracy of 50. spread100 is similar, but assumes the actor's accuracy has maxed out.
{spread+[1-accuracy/max_skill]}×crouch
see ufo scripts page for spread calculation
Summary of weapon tables.

gun	reload (TU)	ammo type	fire mode	time (TU)	damage	shots	crouch	weapon spread (degrees)	spread50 (degrees)	spread100 (degrees)
Assault Rifle	12	Assault Rifle Magazine	Snap Shot	8	42 5	1	0.7	1.8 1.8	1.6 1.6	1.3 1.3
			3-Round Burst	12	42 5	3	0.7	1.8 1.8	1.6 1.6	1.3 1.3
			Full-Auto	18	42 5	8	0.6	2.5 2.5	1.8 1.8	1.5 1.5
			Aimed shot	16	42 5	1	0.7	1.0 1.0	1.0 1.0	0.7 0.7
Minigun	20	Minigun Magazine	5-Round Burst	15	20 3	5	1.3	0.5 2.0	1.3 3.3	0.6 2.6
			Full-Auto	30	20 3	40	1.3	1.5 3.0	2.6 4.5	1.9 3.9
			Full-Auto Sweep	30	20 3	40	1.3	1.5 7.5	2.6 10.4	1.9 9.8
Machine Gun	12	Machine Gun Magazine	Short Burst	12	25 5	6	0.9	2.0 2.0	2.3 2.3	1.8 1.8
			Full-Auto	18	25 5	14	0.9	2.0 2.0	2.3 2.3	1.8 1.8
Sniper Rifle	10	Sniper Rifle Magazine	Snap Shot	12	105 0	1	0.3	1.5 1.5	0.6 0.6	0.5 0.5
			Aimed Shot	18	105 0	1	0.3	0.9 0.9	0.4 0.4	0.3 0.3
			Headshot	24	150 0	1	0.3	0.9 0.9	0.4 0.4	0.3 0.3
7.62mm Pistol	12	7.62mm Pistol Magazine	Snap Shot	6	35 5	1	0.9	1.1 1.1	1.4 1.4	1.0 1.0
			3-Round Burst	8	35 5	3	0.9	1.3 1.3	1.6 1.6	1.2 1.2
			Aimed Shot	8	35 5	1	0.9	1.0 1.0	1.3 1.3	0.9 0.9
Machine Pistol	12	4.2mm MP Magazine	Snap Shot	5	20 5	1	0.9	1.5 1.5	1.8 1.8	1.3 1.3
			3-Round Burst	7	20 5	3	0.9	1.6 1.6	1.9 1.9	1.4 1.4
			Full-Auto	14	20 5	8	0.9	1.7 1.7	2.0 2.0	1.5 1.5
Submachine Gun	12	SMG Magazine	5-Round Burst	7	20 3	5	0.7	1.7 1.7	1.5 1.5	1.2 1.2
			Full-Auto	12	20 3	15	0.7	1.8 1.8	1.6 1.6	1.3 1.3
Riot Shotgun	20	Saboted Slugs	Single Shot	8	50 10	1	0.8	1.5 1.5	1.6 1.6	1.2 1.2
			3-Round Burst	12	50 10	3	0.8	2.5 2.5	2.4 2.4	2.0 2.0
		Flechette Shells	Single Shot	8	15 5	8	1.0	1.8 1.8	2.3 2.3	1.8 1.8
			3-Round Burst	12	15 5	24	1.0	2.8 2.8	3.3 3.3	2.8 2.8
			Full-Auto	20	15 5	56	1.0	3.0 3.0	3.5 3.5	3.0 3.0
Shotgun	20	Flechette Shells	Single Shot	8	11 0	10	1.0	1.8 1.8	2.3 2.3	1.8 1.8
			Double Shot	12	11 0	20	1.0	2.8 2.8	3.3 3.3	2.8 2.8
Micro Shotgun	20	Flechette Shells	Single Shot	6	15 5	7	0.9	1.3 1.3	1.6 1.6	1.2 1.2
			3-Round Burst	10	15 5	21	0.9	2.8 2.8	3.0 3.0	2.5 2.5
Flamethrower	14	C90 Canister	Candlelight	8	6 2	30	1.0	1.5 0.5	2.0 1.0	1.5 0.5
			Inferno	12	6 2	60	1.0	2.0 0.5	2.5 1.0	2.0 0.5
			Inferno Sweep	12	6 2	60	1.0	1.0 10.0	1.5 10.5	1.0 10.0
Rocket Launcher	12	HE Rocket	Aimed Shot	14	0 0	1	0.6	0.2 0.6	0.4 0.7	0.1 0.4
		IC Rocket	Aimed Shot	14	0 0	1	0.6	0.2 0.6	0.4 0.7	0.1 0.4
Grenade Launcher	14	25mm Flechette Grenades	Single Shot	8	6 2	24		4.0 4.5	4.5 5.0	4.0 4.5
			3-Round Burst	14	6 2	72		5.0 5.5	5.5 6.0	5.0 5.5
Bolter Rifle	15	Bolter Rifle Magazine	Snap Shot	8	80 5	1	0.8	1.7 1.7	1.8 1.8	1.4 1.4
			Cannonade	13	80 5	3	0.8	2.1 2.1	2.1 2.1	1.7 1.7
			Precision Shot	16	100 5	1	0.5	1.2 1.2	0.9 0.9	0.6 0.6
Laser Pistol	8	D-F Cartridge	Wave Fire	7	60 20	1	0.9	0.4 0.4	0.8 0.8	0.4 0.4
			Pulsed Fire	10	35 10	3	0.9	0.4 0.4	0.8 0.8	0.4 0.4
Laser Rifle	12	D-F Cartridge	Wave Fire	9	75 20	1	0.7	0.5 0.5	0.7 0.7	0.3 0.3
			Pulsed Fire	13	40 10	3	0.7	0.5 0.5	0.7 0.7	0.3 0.3
Heavy Laser	16	D-F Cartridge	Wave Fire	12	90 25	1	0.5	1.0 1.0	0.8 0.8	0.5 0.5
			Pulsed Fire	18	50 15	3	0.5	1.0 1.0	0.8 0.8	0.5 0.5
Particle Beam Pistol	14	Pistol Particle Accelerator	Snap Shot	7	60 10	1	0.9	1.0 1.0	1.3 1.3	0.9 0.9
			Rapid Shots	11	60 10	3	0.9	1.8 1.8	2.1 2.1	1.6 1.6
Particle Beam Rifle	14	Rifle Particle Accelerator	Snap Shot	10	90 15	1	0.7	1.5 1.5	1.4 1.4	1.0 1.0
			Aimed Shot	15	90 15	1	0.7	1.0 1.0	1.0 1.0	0.7 0.7
			Repeat Fire	16	90 15	3	0.7	2.0 2.0	1.8 1.8	1.4 1.4
Particle Beam Cannon	16	Cannon Particle Accelerator	Snap Shot	17	150 20	1	0.6	1.8 1.8	1.4 1.4	1.1 1.1
			Rapid Shots	24	150 20	4	0.6	2.5 2.5	1.8 1.8	1.5 1.5
			Unrestricted Blast	28	0 0	1	0.8	1.5 1.5	1.6 1.6	1.2 1.2
Plasma Pistol	12	Plasma Pistol Charger	Snap Shot	6	45 7	1	0.8	1.1 1.1	1.3 1.3	0.9 0.9
			Burst	10	45 7	3	0.8	1.4 1.4	1.5 1.5	1.1 1.1
Plasma Rifle	14	Plasma Rifle Charger	Snap Shot	9	60 10	1	0.7	1.7 1.7	1.5 1.5	1.2 1.2
			Aimed Shot	15	60 10	1	0.7	1.0 1.0	1.0 1.0	0.7 0.7
			Burst	16	60 10	3	0.7	1.7 1.7	1.5 1.5	1.2 1.2
Plasma Blaster	18	Plasma Blaster Charge	Snap Shot	13	80 15	1	0.6	2.2 2.2	1.6 1.6	1.3 1.3
			Ball	17	0 0	1	0.6	2.0 2.0	1.5 1.5	1.2 1.2
			Burst	24	80 15	5	0.6	3.0 3.0	2.1 2.1	1.8 1.8