well one of the servers i been on that had this 'feature' would have it for all weapons, including shotgun, which was ridiculous, cus it has this huge spread and if even 1 random pellet would find u... DED
this is why i hate this 'feature' in the first place, u dont even have to aim right, like u said, just spray machine gun all over
to do something per weapon, u need plugins, maybe sourcemod ones. you could also use pistol and 357 only, remove all other weapons with stripper:source, i don't think it needs metamod even
is this your attempt?
https://www.youtube.com/watch?v=ahbQnps1rME