turbochad69Should be in the same location as the weapon scripts, scripts folder in tf2_misc.vpk. You can extract with gcfscape
so i've done this and changed both "soundlevel" and "volume" for "weapon_scatter_gun" but there seems to be no difference in audio
ive put the file in custom/scatter/scripts
im also using vtf crosshairs so maybe its conflicting with that file? im not sure
edit: i was changing the wrong value within game_sounds, ("scatter_gun_double" instead of "scatter_gun_single") so i got it working in the end :D
also etf2l admins said it was okay to use, as long as you dont change continuous loud noises (minigun rev, flamethrower, etc) and you dont change the volume of explosions but pistol + smg is fine (unsure about rgl / ozfort however, if ur using this then check for yourself)
here is it working with scatter + pistol + winger on half volume
edit 2: idk why but sometimes this just doesnt work in spenny dm / serveme, its very inconsistent even with preloading and ive yet to figure out why