I have never seen a 25-06 round thru a 30-06 but I have seen it thru a 270 Win which gives it virtually no pressure on the bullet . The shooter fired five rounds and all five hit the target at 100 yards two to five inches to the right . The guy shooting didn't realize that he had shot the wrong ammo but was concerned that his gun was suddenly all over the target .Further checking revealed he had grabbed a box of somebody elses ammo with out looking at the caliber . The sound was off and the recoil was off but the rounds didn't stay in the barrel that is for sure .