RE: 25-06 270 30-06
It has worked very well. For deer, I wouldgo with a 150 to 165 gr bullet with 165 gr being the preferred weight. The 180 gr are really made for elk and not deer.
If you usethe correctbullet, have proper shot placement and don't outshoot your abilitiesnor the abilities of the cartridge, you will not have any problems with a 30-30 (200 yards max with regular 30-30 ammo),7mm-08, 308 win, 25-06 rem, 270 rem, 280 remor 30-06 for deer.
The reason I went with the 30-06 is it will work on any game in North America, and the ammo and reloading components are common. This may become more important as time goes on. Based on that criteria, I would choose between the 308 Win, 270Remor 30-06. One concern with the 308 is will thecurrent administration try to outlaw it forcivilian use as it is a sniper round used by the military and law enforcement (parts ofEurope has a ban like this).
There are better big game (big bears, buffalo, etc.) cartridgesthan the 30-06, but it is a great deer round and very versatile. Iconsider a 30-06 a deer rifle that is capable of taking big game.