Flip a coin. In a Tikka, both actions same length/weight. Both very capable but if I were running factory ammo I would lean to a Creedmoor actually. Since you handload, accuracy and velocity will be more similar than not, using good brass and loading technique. Noth more accurate than most shooters off the bags.

I like the 120-130s in the 260, not that it won't handle a 140, and on deer, I see nothing but meat in the freezer from 120 and up.

I would run a 140 at 2700 in the Swede and a 130 at 2850 in the 260. Both highly effective, and have reach.