the part where u have to go and confront cachino after finding his journal is where i am stuck at. i accidentally went downstairs once and pulled out my gun and the omerta thugs started shooting me. so i ran out and waited a couple days and even did a couple missions and when i went back they started shooting me again. then i load back and wait 4 days, go back in, and they still shoot me . what am i supposed to do so i can confront cachino without him shooting me.

You aren't supposed to bring weapons into the casinos. Maybe wait a really long time and see.

best bet is to load a save prior to pulling your gun.