Are you telling me you sight your gun in at 25 and don't bother with how it shoots at longer ranges? Adjusting your scope at the farthest range you can shoot is more precise. I am not a big believer in the close up sight in method. Ballistics charts are nice guides, but they normally are not real accurate, especially with factory loads.

At 25 yards you are going to have put a ton of clicks on your scope to move the impact point 1 inch. At 100 yards it will be 4 clicks, at 200 yards it will be 2 clicks. You can't even distinguish between four clicks at 25 yards, but if you are 4 clicks off at the 25 yard sight in yardage you could be more than two inches off at 200 yards. Then when you factor in the variance in the ballistic chart accuracy and your particular rifle it could get more extreme.

And then there is the parallax issue if you are using a fixed parallax scope. It will not be correct at 25 yards and if you don't have very good shooting form or your scope is mounted to high (often the case) it will just make that much harder to get a precise sight in at 25 yards.

Paul