Let me be the first to say I do not know that much about ballistics, that's why I am here. For the longest time I have shot Federal Premium Nosler bullets out of my 270 and I have been happy with them. A friend of mine is getting out of hunting and he is giving me his bullets he has. (almost 100 rounds of factory ammo) They are Federal round nose bullets. I only use my gun for deer hunting and 150 yards might be my max. shot where I hunt. You guys anticipate much of a difference in how they shoot out of my gun?