Buying one of those cartriges you would simply be duplicating the two that you already have. You want a flat shooter that is versatile. You already have the 270, one of the best deer cartriges ever made. It' s capable of taking any hooved animal on this continent. So is the 308, it' s just not quite as flat shooting but it is negligable. These figures came from Federals' premium line. Looking at these figures the .270 is already the flatter shooting rifle and retains more energy than any of the other three. If you are just wanting a new toy then I personally would opt for the 7mm-08 over the 25-06. The 7mm bullet is ballistically superior to the 25 caliber. If, on the other hand, you are open to other suggestions, since the 7mm - 08 and 25-06 are dulicating what you have I would take a good look at the 257 roberts, 260 rem., 6.5 x 55 Sweed. Just to be different. Sorry if I just really screwed you up.

25-06 100 grain NBT, muzzle: 3210 fps and 2290 ft lbs / 300 yards: 2490 fps and 1380 ft lbs. 6.8" low @ 300 yards

.270 130 grain NBT, muzzle: 3060 fps and 2700 ft lbs / 300 yards: 2430 fps and 1700 ft lbs. 6.5" low @ 300 yards

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7mm-08 140 grain NBT, muzzle: 2800 fps and 2440 ft lbs / 300 yards: 2260 fps and 1590 ft lbs. 7.7" low @ 300 yards


.308 150 grtain NBT, muzzle: 2820 fps and 2650 ft lbs / 300 yards: 2220 fps and 1640 ft lbs. 8.9" low @ 300 yards