Needing a 180+ 30 cal thing is just simply not true. If the thought is more energy, let me throw some numbers your way. At 400 yards, a 140 Berger going 3090 fps (my load in a .260 AI, you could get much more out of your 26 nosler) has right at 2100 ft-lb's of energy. A 300 win mag sending a 180 accubond at 3080 fps has 2445 ft lbs. It has 345 ft-lbs more, but that really doesn't matter because both of them have over 2000 ft-lbs, more than sufficient for any north american game. Now, lets stretch that out, to 800 yards.
.264 140@ 3090 = 1,430 ft-lb's
.308 180@ 3080 = 1,506 ft-lb's
That is only a difference of 76 ft-lbs....that is less than the energy of a .22 rimfire. An animal is not going to notice, and the extra energy will not make up for fouled shot placement.
And I didn't mention that the 6.5 has less drop, less wind drift, and less recoil than the 30 cal.
Now of course I did bias it towards the 6.5 cal, as I used a high bc bullet. If you changed the 30 cal to a 215 Berger going 2900 fps, it would be a totally different story. But my point is, if you can kill it with a 300 win mag shooting a 180, you can kill it just as well with a 140 going the same speed.
Now that that is out of the way...lets look at your needs. Deer and occasional elk, and you want to shoot it a lot and improve your skill. Well, there goes the 26 nosler, your barrel will be gone REALLY quick. Save that gun for hunting if you still want to keep it. The 7mm mag isn't terrible on barrels, but if you don't have a brake, 30 rounds can get painful for some people.
A smaller 6.5 or 7 may be a good choice. Creedmoore, 6.5x47, .260 or AI, or possibly 6.5x284, and there are also the options of 7mm-08, or possibly .280 rem or AI. None of these would be terrible on barrels, all would be sufficient for your hunting needs, all would reach the range you want, and none would have terrible recoil, even without a brake. Hope this helps