Sounds like you have a lot of advice here, I kinda have some of both of what you are looking at. I have a Tikka CTR in 260 Rem that I bought a few years ago before they were available with 24" barrels in 6.5cm. I bought it pretty strictly for long rangeish shooting at steel. Great trigger, soft recoiling and very accurate (I've only ever shot handloads in it, not much selection for 260 out there unlike the CM). For shooting long range targets, it's really nice.
I hunt with a 300 WM, however. Weatherby Vanguard accuguard. Also very accurate (broke it in with factory, only handloads since). Not as pleasant by any means to shoot as the Tikka due to increased recoil, but to me, it's not bad. That said, my previous rifle that I shot a ton of was a lightweight 375 that was fairly ferocious, so the 300 is a nice step down in that regard.
There are differing views on what you will want in a hunting rifle, caliber wise, and I'm not about to step into that argument.
But strictly from a 'shooting steel way out there' perspective, the 6.5's are super. Low recoil, high BC...lots of choices, relatively cheap ammo.
If you do decide to go with a 7mm or 300 mag, I personally chose against that in a Tikka due to the way the Tikka's are setup in terms of box length, and at least on the 300, twist. I am slinging 212's and they need some box to feed from, and a lot of twist to stabilize, and I don't think the Tikka will work down here at near sea level with the bullets I want to run. But your mileage may vary.
Tikkas, most of them, are also wonderfully light...a good thing in the arms...maybe not so nice for a long day at the range with a 300 win mag shooting heavy bullets.
Something to think about...maybe figure out what caliber (or calibers) you want, then match what is out there in terms of choices to those needs. I ended up with a two rifle solution. Probably could have gotten by with just the 300 as it doesn't really bother me as much as I thought it would, but two rifles is nice when it's hot and you want to keep shooting....let one cool while you shoot. etc. And no doubt, recoil is way lower in the 65!
Have not had SWFA or Nightforce...currently have Vortex HST, Leupold VX6, VX3i, Zeiss HD5. Been lucky, so far, none have had dialing problems. We push them out to 1200 yards, back, up and down again, no problems as of yet. But then, we're shooting steel plates, not targets, so maybe they are off a bit and we don't notice, not sure. But been 'elk sized kill zone good' so far with no issues. The Leupolds have been particularly good in low light and handling flare etc., HD5 a little less so but still great. For hunting scopes, been really happy with them.
HTH!