there are some pretty reliable moves for some types such as
fire - flamethrower < Fire Blast
water - surf < Hydro Pump
ground - earthquake
ice - ice beam
electric - thunderbolt < discharge
psychic - Psychic
fighting (special attack) - Aura sphere < Focus Blast
ghost - shadow ball
dark (attack)- crunch, night slash
dark (special)- dark pulse
rock - stone edge
All of these moves have pretty high PP and are all 100% accurate besides stone edge i think