Spline caused the right hand to move unpredictably this was fixed using the graph editor. Left hand is moving too linear and when left hand is holding the bottom of the gun it slightly moves independent the gun and the right hand. I will constrain the left hand to a locator or parent it to the wrist controller of the right hand. The left arm is easing into the gun which feels unnatural, George suggested the character should slam the gun flat on the left hand palm.