Not that familiar with the 7mm rem mag and the various ballistics/variety of loads etc. but assume it to be higher velocity due to the lighter bullet and more powder in the casing, so in the right set up it should be a tack driver and have a longer maximum effective range, with a little smaller bullet. I have one friend who owns one, it performs well on whitetale deer as I have seen him get a few here with it. Maybe it does out perform the .308/30-06, you would have to compare the ballistic charts to see what the actual differences are. Not so easy to decide between those, but if one could find a heavy barrel like the savage my friend bought in .308 recently, which I have shot several times, that would have to cover most hunting applications, not sure if there is a similar set up in 30-06, with that heavy or target type barrel rifle, with a 1:10 rifling, I think it was glass bedded too, really performed well with tight groups. I will go out on a limb and mention, (please correct me) that those .308 & 30-06 are just about ballistically identical, or very much the same, just that the .308 has a 1/2" shorter casing. You have to look at the tables & charts. There is a lot of surplus military ammo available, but that may or may not be of interest depending on what you shoot and how it performs in a particular rifle. Some military brass, I think U.S. made, has thicker wall casing, berdan primed, some things to learn about the interchangability of mil ammo and non mil ammo, not sure how important but there are differences. If you look at the list of factory loads available and the same for making your own loads, there are a lot of options for these .308/30-06. I'm under the assumption that the proper loads would be effective for most North American big game, but if you are after Mule Deer, Elk, Moose or the larger bears, longer ranges might want to look further into that, max effective range and bullet energy etc. not something I'll ever hunt so the .308 is plenty for what I do. If you need the extra power, I'd go to the .300 Win Mag., I have seen how those perform like I mentioned before. You can find the ballistics for these on the web, you should take a look and see what decent rifles they can be found in, might help you decide. The ones you are looking at are all quite impressive, just have to consider what you will be hunting.
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