My uncle has left me his Remington 700 BDL in .222 Rem. It has always shot <1 MOA with factory 50gr Remington ammo. I would like for my young daughter to use this rifle next deer season to possibly harvest a doe. In Oklahoma the minimum bullet weight is 55gr for deer. I'm looking at trying Hornady 55-60gr SP and I would like to go heavier but I'm not sure of this rifles twist therefore I don't know how heavy a bullet it will stabilize. Does anyone have a suggestion as to powder and weight of charge using either a 55 or 60gr bullet and could I possibly step up to 68-75gr? Any help would be greatly appreciated.