Guns and Energy Weapons have reduced sway, increased V.A.T.S. accuracy, reduce rate of fire (excluding fully-automatic) and increased AP cost per shot. It has no effects on projectile spread, this means it affects run and gun with a mangled arm, but will not make a shotgun have a tighter spread pattern.
- The effects of this trait and Fast Shot work against each other. Fast Shot multiplies attack speed by 1.2 and accuracy by 0.8, while Trigger Discipline multiplies attack speed by 0.8 and accuracy by 1.2 - effectively ending up with a 4% (= 100% - (100% * 0.8 * 1.2)) decrease of both accuracy and attack speed if both traits are taken.
- The bonus to hit in V.A.T.S. is multiplicative, similar to other V.A.T.S. perks, like Sniper and Commando. Taking this trait with Commando/Gunslinger and Sniper result in a 87.5% bonus to headshot accuracy in V.A.T.S.
- Taken with the perk Ain't Like That Now, the fire rate penalty from Trigger Discipline is reduced from a 20% to 4% (= 100% - (100% * 0.8 * 1.2)), due to the 20% increased attack speed bonus from the perk.
- Fast Shot's AP cost reduction affects guns and energy weapons only.[verified] When viewed in the G.E.C.K., it appears that the AP cost increase of Trigger Discipline affects all weapon types, which is most likely not the intended effect since
- Trigger Discipline does not affect the rate of fire on fully-automatic weapons. This also applies to Fast Shot. This may not actually be a bug but intended behavior, as the real-life concept of trigger discipline does not change the rate of fire of a firearm; only the act of pulling the trigger itself.[verified]