Have you ever seen what 700 yards looks like? Lets be honest for a second. You aint never going to shoot an antelope that far away. You know it, I know it. Go get one of those blister packed tascos from walmart them good right tere.............
leupold mark 4, Night Force, or IOR, ya also need a LRF (that will range a antelope to 700 yards), a way of knowing your current atmospheric conditions, a way to measure wind speed, and a ballistic computer that will take all this into account that has been tuned to your hunting load, and a level on your scope, then your all set.
RR
If you find a sales man that will tell you that you will be able to shoot accurately out to the ranges you want then make sure you also buy the bridge to Australia that he's probably also selling. Go buy a 3-9 or 6-14 powered scope and plan shots that are actually realistic.
Indy, you may not believe it, doesn't matter to me if ya do or not but 700+ yard kills on game are not only realistic but common, not everyone is limited to pistol calibers for big game hunting
Google long range hunting
RR
I've got a Leupold 3.5x10x50mm on my .300 ultra. I've tried it with success to about 450-500. If you are serious about 700+ you might want a 6.5-20 or 8.5-25 LRT, but I doubt you'll make many shots that long unless you're deliberately looking to do that.
I like the Leupold 8.5x25 for hunting longer ranges. The Nightforce scopes are very nice but not needed. I have both and like both. If you are on somewhat of a budget the Leupold will be just fine. I'm going to side with RR, as to all the non believers 700 yards isn't all that far if you practice at long range. With proper equipment and good practice 700 yards is actually kind of a chip shot but don't expect to go to Wal Mart by a rifle and a box of ammo of the shelf and expect to hit anything at that distance with any regularity
Wheh I googled "long range" shooting this is what I found;
There are always exceptions, of course. Jack O'Connor himself killed big game animals at over 300 yards, and other masters like Bob Hagel, Warren Page, Elmer Keith, Pete Brown, Francis Sell, and Townsend Whelen did likewise. But these men had the skill and the experience to justify such shooting. They lived at a time when game was much more plentiful than it is today, and when bag limits were generous or nonexistent. As full-time professional gun writers, they had the opportunity to shoot an enormous amount of ammunition through a very wide variety of rifles, and to spend a great deal of their time hunting. Such opportunities were rare then, and are almost nonexistent now. The times have indeed changed, and not always for the better.
I would like to conclude by pointing out that long range shots are less common than might be inferred from reading the sporting magazines. Most big game animals in North America are killed at under 200 yards; in fact, most are killed at less than 100 yards.
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A very good friend of mine has a Leupold Vari X-III 6.5x20 on his Remington Sendero 300-Remington Ultra Mag.
He likes this rifle & scope combo for antelope, deer & elk. He has taken several deer & antelope at 500-plus yards.