Is this normal 22-250 / 243 ?

EDP

EDP

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I use a 22-250 and am setting up a 243 went to the range the other day as I have re scoped both
1st shot the 22-250 sighted in at 25yatds dead on move out to 100 yards makes it about 8-9" high

2nd the 243 dead on at 25 yards move to 100 it is only about 2" high

Is the 2" to 8" differance normal or just a fluke ?
 
Lot of variables there we don't know. What loads and speeds, and very important how high the scopes are off of the bore compared to each other. If the 22-250 scope sits higher that would make a lot of difference.
 
Both scopes are on tally solid bases with Burris tach low rings

The 250 (browning x-bolt) is a 4-12 vx-r. Shooting superformance 50 gr vmax
The 243 (Remington VTR)is a vx-6 3-18 shooting superformance 58 gr vmax
Both are 30mm tube
 
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First guess is the rings/base/screws connection is faulty somewhere. Did you degrease the screws and screw holes, then Lock-Tite them in place with a torque wrench?

Is the 22-250's cold bore shot is way "off"? In this case: way low? You only fired one shot at 25 yards right?

Are these proven scopes or new? Did you change the magnification setting from 25 to 100 yards? Could be something screwy going on when you change magnification.
 
That does sound a little high to me, but I don't zero rifles at 25 yards neither. I zero at 100 always. If your scope is 1/4 clicks at 100 yards, if you were to get to bullseye at 100 it would take around 32 clicks down, which at 25 yards should only be 1/16th clicks which should put you about 2 inches low at 25. At least in my way of thinking anyway. I always see my rifle shoot a little low at close range when I'm dead nuts at 100.
 
I also think that like someone mentioned above, scope mounting height will also come into play as well as the ballistics of the rifle you are shooting. But I could be wrong, it won't be the first or the last time that's happened.
 
I've found that my 25 yd. is usually about 1.5" low and that is due to scope height. 8" sounds abnormal to me. Now that it is sighted at 100 try that 25 yd again and see what you get.
 
Usually if I dead on at 25 with a 223, I'll be 6-8 inchs high at 100. I sighted in my 17 Hornet at 25 and went to 100 and was about the same.
 
There was a time when I was infatuated with the 25 and 50 yard zeroing in theory. It worked pretty good the first time I tried it, then after that I guess I fell out of favor with it, and went back to 100 yard sighting in. This is how I do it.....I will boresight the rifle after I put the scope on, then shoot it at 25 yards to get it shooting where it's supposed to. Then I shoot at 100 yards to do a final zero, then at 200 and 300 yards. I would never shoot a rifle at only 25 yards, and then expect it to shoot where I want it to at longer distances.
 
Wow..25 yards, thats close man. I get on paper at 50 then go on to 100 to fine tune. If they both shoot well at 100..I wouldnt let it bother me.

Cheers!!
 
Originally Posted By: kymailman98There was a time when I was infatuated with the 25 and 50 yard zeroing in theory. It worked pretty good the first time I tried it, then after that I guess I fell out of favor with it, and went back to 100 yard sighting in. This is how I do it.....I will boresight the rifle after I put the scope on, then shoot it at 25 yards to get it shooting where it's supposed to. Then I shoot at 100 yards to do a final zero, then at 200 and 300 yards. I would never shoot a rifle at only 25 yards, and then expect it to shoot where I want it to at longer distances.

That is what I was doing I had just mounted the scope
Just seemed weird the differance in the 22-250 and the 243
 
You have to take into account the distance between the center line of the scope and the center line of the bore. Think of being 25 yards away from the target and first off, was it really 25 yards measured or more like 35 feet??? Now imagine the scope center line dead level with the target...the barrel points up when the scope is zeroed and there is a triangle formed from the dead center of the bullet impact to the scope's crosshair and from the bullet impact to the bore center line. Now move all this out to 100 yards...line of sight stays level, so the scope center line is straight to the center of the target. Now figure how the barrel is pointed way higher above the center of the target. It doesn't take much difference between the bore and the scope center lines to give you 4 inches vs. 8 inches high from 25 yards to 100. Nothing to do with calibers at those ranges...as someone said, one rifle has higher rings or bases than the other. If both had the exact same scope height they would have both shot as high at 100.
 
Shouldn't surprise any shooter that a factory rifles action/barrel are not trued or straight, after all you are calibrating the scope to the plane of the bore. Left right up down or any combination of these.
 
"Nothing to do with calibers at those ranges...as someone said, one rifle has higher rings or bases than the other. If both had the exact same scope height they would have both shot as high at 100."

This would only be true if the two loads had bullets with identical BC and velocity. If either velocity or BC is different then one bullet will drop more at 100yds than the other since time of flight will be different.

If the OP is using a relatively heavy, slow bullet in the 243 and a light, higher velocity bullet in the 22-250 then he could generate the same results even if scope height on both rifles is identical.

My prediction is that when he goes back with the 22-250 zeroed 2" high at 100yds his rifle will print low at 25yds by about an inch.

JPK

JPK
 
I'll see
They actually have almost identicle set ups
I don't sight in high at 100 usually sight dead on at 100 yards
The only reason I fired at 25 was to make sure I was on paper then moved to 100
 
with bolt action rifles there's never a need to shoot at 25 yds, when you can pull the bolt out and look down the barrel at any long range object and simply move your crosshairs over until they line up with the view your looking at down the barrel.

At 100 yds... you can always hit a sheet of typing paper on the first shot.

Just curious... after those first couple of shots at the range.... what did you do then... shoot more...or stop there...?
 
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