James B
The way I see it is most of your seasonal hunter types cant shoot half arse straight anyway. They pull the rifle out to sight in 1 month before season and only shooting off a box of shells or so, which is fine for short distance. Then if they were to see a trophy at a longer distance than there norm they are going to make a lousy shot. It is not anymore dangerous shooting at a deer at 100yds than it is at 600yds, if you miss the deer at 100yds where do you think the bullet is going to stop at? I havent met anyone that will wait on the deer to stop in front of a backstop,so in case he misses it will be safely stopped. Now if you are nervous shooting at a deer at 600yds knowing you are aiming at the kill zone but you dont know your ballistics etc.. and afraid the bullet might hit him in hte butt, you better not shoot

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I have a friend that is a major deer hunter, he likes the fancy ballistic calibers, he goes around bragging about his rifle " Rem 700 7mmRUM" hitting a quarter at 50yds. This is nothing to bragg about. He is a moran.
Do some long distance shooting for practice 300yds for a start after you get the groups to the size of a golfball you should be good to go. Or better!