The slower twist is usually used when lighter bullets are the goal. But, when combined with a longer barrel then you can get higher velocities, which allows heavier bullets. So, when you have slower twist and longer barrel you could probably still shoot heavier bullets.

My 12BVSS has a 26" barrel and 1:10 twist.

FWIW, a faster twist alone is not better for longer range with the same size bullet. It does allow you to shoot a heavier bullet, which are usually better for longer ranges.