7mm's rock the 30 cals world in LR. Run your numbers to a 1,000 with like bullets and see the difference.
When I competed 1K BR between 2005 and 2007 in Tucson, the 30s spanked the 7s pretty consistently. The 7 WSM does show the most promise, but the 180 Berger may not be as good as the 168 Berger accuracy wise. Also, Bergers BCs seem overly optimistic. I shot metplat uniformed 220 SMKs (Initial BC over .6) from a 300 WSM and likely still hold the club light gun agg record, that I set and broke and set again--though I do expect that record to be soon broken, my bet is on the guy shooting the Partiot (short fat 30 cal) and 210 JLKs. the Tucson range has an almost constantly gusty quartering tailwind. If there ever is an Eastern style calm wind day, a 6.5 might spank everyone.............
I don't care what the drop is, but my combination of bullet and velocity yeilded abut 60" of drift at 1000 yds in a 10 mph crosswind. Extreme spreads of 11 fps didn't hurt anything either..........
To the OP, I'd pick the 300 Win mag over any 7 any day for long range animals.
