Initally I was sighting my 300 win mag in with the XP3's....I was having issues with getting a flyer every now and then always high and right about 1.5 to 2 inches and it made me nervous....my dad expieranced the same thing with his 300 and xp3's. I switched to the Federal Triple Shock 180 grain Barnes expandables and they work awesome! I shot a raghorn Bull Elk last Sunday in Idaho @ 120 yds he walked about 10yds and dropped like a stone. I was quite impressed with the way the bullet worked.