Ok for some reason both sniper rifles in the game share the same sound files. The semi-auto and bolt action share the same sounds so you can only play with one sniper rifle at a time because the other one will make weird sounds or sometimes it wont. So in each folder i put you the picture of the sniper you are supposed to use after you install the sound mod.

PSG-1 = Semi-Auto Sniper Rifle

Remington 700 = Bolt Action Rifle

Barrett M82 = Bolt Action Rifle

Dragunov SVD = Semi-Auto Rifle