I saw my bil shoot a white tail buck a few years back, through the lungs with a 120 ballistic tip from a 7 mag. The deer still ran 50 yards. The whole front end was a mess. There is no guarantee for a DRT, except with cns shots. I would just pick a good bullet and shoot for the shoulder, or neck, which is the most decisive. I have shot deer with a number of different bullets over the years and as far as drt lung shots, the best is frangible bullets like SST etc. I prefer a bullet that will hold together and deal with it, if they run a bit. I don't worry about meat loss on the front end of a deer, either, as there is very little meat on the shoulders, anyway. Even a shoulder shot usually leaves me some meat there.
I have always been a fan of standard 139 Interlocks at about 3100 from my 7 mags for hunting deer. I get plenty of drt, but even the runners, do not go far. In my 6.5s, I have become a real fan of the ELDM bullets also, but have not tried them in the 7.
