I shoot a 260, which is about the same. I have used only the Nosler 100 gr Ballistic Tip and the 120 gr version. Both are extremely accurate and are effective on deer, pigs, and coyotes. After using both bullets over 6 or 8 years of hunting with that caliber, I am firmly convinced that the 120 gr is a better deer and hog killer. Both bullets do a fine job, but I rarely get an exit wound on a big pig when using the 100 gr BT. I get more exits with the 120 gr version. I popped a 200 pound hog a couple of days ago, using the 100 gr BT. He trotted about 20 or 30 yards before he dropped. He couldn't get any deader, but again the bullet didn't exit.
One of the reasons I stick to these bullet weights is to keep the trajectory similar to my 270, which I shot for 25 years or more. Less thinking is required by me if I don't get away from that trajectory. If I had a longer barrel, I might move to the 130 gr Accubond if I could get it up close to 2900 fps MV.
Many 260 and 6.5 CM shooters use the heavier bullets, at 140 gr or so. It appears to me that they want the high BC of those bullets for long distance shooting. I don't see the need for high BC for my needs.