Doing some basic ballistics using .206 as the BC and 1850 as the fps, the Barnes needs 1100 fps to fully expand so is claimed. Due to all of this and the energy of the projectile, I would not recommend shooting the rifle at deer size animals past 275 yards. This would keep you at the necessary fps and energy levels to still make a clean kill. Also remember, as the Barnes expands, due to the copper make up of the projectile, if folds back into numerous razor sharp edges... So if you want to shoot 200 yards, practice and then have at it.