To answer your question, YES. With decent glass and provided you have the proper form to shoot well enough, the 7-08 is plenty enough for shooting 400 yards. I probably wouldnt be trying to kill deer at 400 yards with it but a little smaller animals should be fine. Im sure people will chime in and say that 400 yards is no problem for killing deer with a 7-08. They are probably correct, but thats a long way unless you really know how to read the wind and its probably getting marginal as far as energy at 400 for deer. But the round is a nice flat shooting round with a light recoil.7mm 08
I have the opportunity to buy a new rifle winchester model 70 featherweight the current production ones. Will this rifle shoot up to 400 yards accurately.
And then test. Test. And retest those ballistics. Even at 2-300 yds, we kill 50 times more targets than game animals in all conditions just to be certain, and I can promise one thing: true certainty will ALWAYS kill better/more efficiently/more reliably than thinking you know that ballistic tip will decimate the lungs at 375 yds in a 15 mph crosswind with "enough energy". For many people who have never hunted long range (or even at all) I've picked up a lot of wounded game and the cartridge/platform/ammo is the smallest factor. I completely agree with getting real world training and advice from folks that can be right there with a person to help them out. I know a fellow who's been hunting for years (successfully) but until just a couple weeks ago whilst sighting in rifles with me, didn't know that sighting in on 3x at 50 yds throws your shot WAY off on 9x at 200 yds and didn't get the effective difference in b.c. between a .22-250 and a .260 but sure loved the velocity on that .22. Real world practice with honest helpful people sure makes a lot of difference, and even experienced folks can still learn something new and useful.If you have never hunted with a rifle get some advise. There are many things to learn before choosing the range you will be shooting. Take a course in Hunter Safety and study basic ballistics of your rifle.