I had a 25-06 built a few years back. It seems to shoot really well with a variety of factory ammo but none are particularly fast from my barrel. My rifle has a #4 contour Montana barrel 24" in length. I think it was a 1 in 10 twist but would have to ask the gunsmith to be sure. Anyway here is what shot best that I chronographed and the speeds I got you can use in your decision. These two offerings both gave 2 consecutive 3 shot groups of .5" so I chronographed them. I had had a few 25-06 rifles over the years when I wasn't handloading so I had a lot of partial boxes of ammo around to try.
Federal Premium 100gr Nosler ballistic tip 3080fps (makes a mess of a coyote if he isn't perfectly broadside)
Barnes Vor TX 100gr Tipped TSX 3007fps (drops coyotes instantly but very little pelt damage, punches through with small exit)
I also handloaded the Barnes 80gr TTSX but my barrel did not like them with several recipes and I did not chronograph them. My barrel also did not like any of the Hornady factory Superformance loads, 100gr Core-Lokt, Federal Premium 85gr Ballistic tips, Pendleton ammo 110gr Accubond, or Privi Partisan 90gr HP. Initial groups were not under 1" so I did not pursue any of these.
It did like a handload with the 100gr Swift Sirocco II over 54.5gr of H4831SC with an average velocity of 3187fps. This bullet took several coyotes with good controlled expansion and would be my choice if I decide to handload all the time for the rifle. I have not tried it yet on deer, the days I took it during antlerless season I never got a shot. It performed like the Barnes load on a couple coyotes.
I am currently experimenting with the new factory Hornady Precision ammo with the 110gr ELD-X. So far all it's got is a coyote but it put a small entrance and exit in him at 300yds. The rifle shoots it the best of anything I've tried so if it proves tough enough I will likely stick with it and not handload. I have not yet had the chance to chronograph it but hope to soon. With the way it's shooting and the high BC if the terminal performance and velocity are good I don't see a reason to spend time hand loading for this rifle, I don't think I can improve the accuracy and I spend a ton of time hand loading for the bigger guns already. I've shot 4 cold barrel 3 shot groups with this ammo and three of them were ragged holes. The fourth was barely over .5".