when shooting my pistol the front sight moves to the right. I am right handed. When the trigger breaks and releases the hammer the trigger swings to its full reward travel and the pistol pulls to the right. What causes this? Is it because I am pulling the trigger and not squeezing? Is the trigger spring too heavy? Maybe the hammer spring? I hold the trigger in the 1st knuckle crease of my index finger. I need to know whats going on as my first 2-3 quick shots are always to the right then if i slow down and eye up the target I can hit where I am aiming usually. The pistol is a Tanfoglia Witness 10mm.