A friend is thinking about purchasing a sporter length .223 bolt action and he wants to use it for woodchucks as far out as he can shoot it. Guessing 250 yards with sufficient terminal velocity for a humane kill. He is going to want to use a varmint bullet (lead or polymer tip) in the range of 50 or 55 grains. The gun he is considering buying has a 1-9 twist rate. At max loads do you think the twist is too fast and will the bullet break apart in flight? How fast do you think he can push it. Bullet suggestions appreciated as well. Any input is appreciated. Much thanks.