I want to find Western movie!?

I don't know name of the movie, I don't know actors. I just remember main actor at the beginning comming from prison, ridding on horse. After he enters the city, he buys a gun, shoot on guys in front of the shop and leaves. After that, he goes to his fathers house, talk with him and then goes to hire sheriff and some other guys for revenge. Western movie, maybe 80', 90'. Please help me to find the name, cuz I had watched it when I was kid.