Are there special gun prefixes beyond Trick Shot?
Solution 1:
Please see the below link that specifies "The fire rate accessory has no practical effect on Jakobs pistols; the "Trick Shot" prefix instead causes bullets to ricochet upon hitting walls" - The fire rate accessory is named "Trick shot" on Jakob's weapons.
https://borderlands.fandom.com/wiki/Weapons_by_prefix_(Borderlands_2_%26_Pre-Sequel)
The link provided above also gives the names of the other prefixes of weapons and their effects.