I have had a 7-08 for over 13 years now. I don’t know if it is the calibre or the rifle but I can just get out there and shoot anything with confidence. Be it a decent size red stag or a fox under the lamp on the way back from stalking. It’s not the first rifle I would pick for lamping.
I have only ever used Remington brass and nosler 140gr ballistic tips. My barrel is 19” and my load is only doing 2720fps. As it’s only a 140gr bullet recoil is very mild. It certainly isn’t a rifle I would be shooting at extended ranges but it works brilliantly for the intended purpose. A
I have previously had a variation in for .260 and changed it to 6.5X47 which is a stunningly accurate round. You could say it’s like comparing .204 to 20 Tac. Which is another round I had, now that one isn’t even a commercial offering at all if you want to be different. Similar ballistics in both but less powder. Which I like as powder is expensive and I’m tight
The .260 really isn’t an efficient round hence it falling out of favour and the 6.5 creedmoor being so popular, I prefer the 6.5X47 but it’s not a readily chambered in factory rifles if you are going that route.
The .260 brass being longer than the 6.5 creedmoor causes issues with optimal seating depths when running the higher BC bullets which are longer. The bullet has to be seated deeper which eats in to powder space. But that is a mute point if not ringing the neck out of it seeking any ballistic advantage you can.
The main deciding factor is what rifle you are going to buy and the availability. Both 7-08 and .260 are not popular chamberings in factory rifles so you might struggle to find the rifle you want and could be in for long wait.
Or you could go for a cookie cutter 6.5 creedmoor or .308 that will more than likely be in the shelf of your local shop and be out shooting with it the day your variation lands.