If you run the ballistics it’s really close. If you can run the 130’s 150 fps faster it actually edges out the 140 for velocity and energy to 600. I know I have run the 130 .277 at 3200 and it has been a killer. I would think if you could get the 130 to 2900-3000 with R26 it would be the same. The 140 may penetrate a little deeper with the extra mass.
its gonna be which ever one your rifle shoots the best darn near equal in performanceBullet will be the Accubond, I have a 100 of each. Game is deer, bear and Spike elk. Distance up too 600. Rifle will primarily be used for deer. I’m also shooting a 270W with 150s @3000.