Summary: Ranged weapon accuracy decreases with rank instead of increasing due to logic error.
I made a thread here detailing a possible bug I found. In summary, each rank of ranged skills (Bow, Crossbow, Throwing) adds a positive bonus that is then used to increase "WeaponInaccuracy", making ranged weapons more inaccurate with each rank. When I made the SkillEffect bonus negative instead, it made the weapons more accurate.
I made a thread here detailing a possible bug I found. In summary, each rank of ranged skills (Bow, Crossbow, Throwing) adds a positive bonus that is then used to increase "WeaponInaccuracy", making ranged weapons more inaccurate with each rank. When I made the SkillEffect bonus negative instead, it made the weapons more accurate.