I mainly shoot up to 50 yards and I use both pellets as my main projectile. Both are very accurate in my rifle, but 25.39gr always seem to be just little more consistend/accurate. I get good groups in both, but 33.95gr have more flyers which open up group. In windy conditions I might choose heavier pellet. Longer range than 50 yards heavier pellet might be better, but then again, I would probably choose slug then.