I am afraid I already know what the answer is gonna be but, here it goes!
I am attending an NTOA Precision Long Rifle II class so I went out this week to re-zero my AI AE w/ USO 3.2x17 Tpal for 168 Hornady BTHP (I have been shooting the 110 TAP for duty use). During this process I learned that I only needed to come 1 3/4 IPHY for a correct zero.
It should be noted that I have never had a Cold Bore deviation, or any other deviation unless it was shooter error with this gun.
After getting a good zero, I adjusted the turret caps and put it away until today.
Today went out and found that the cold bore was 1 1/2" low. With no adjustments to the scope the follow-up shots are dead on.
I thought to myself, well must have been me even though it felt good. I shot a few more and they were good as well. I decided to quit and come back later.
During the down time I checked the action screws for tightness (proper torque setting) and all appeared good. I did this with the rings as well.
Later, exact same thing. So, now I take the rifle and put it in the truck w/ AC on. Get it back out and shoot it again. Pretty decent (shooter error)! Now, I take the gun and bounce it on the butt of the rifle several times, as seen in the famous AI video (the scope is mounted in a 6/4 combo of Seekins rings). First shot - 1 1/2" Low - Follow-up shots are all good. Now, I shoot a few more and they are pretty good 1/2 moa or so. Bounce it again, 1 1/2" low with follow-ups falling right back into the "x".
I took the stock sides off and the action out and cleaned it (not dirty by any means) and put it back together. Pulled the scope and checked the base (good) rings and such again.
I am going back out tomorrow with another scope setup ready to go if needed.
Any thoughts from you guys?
I am wondering if scope some how took a crap! It has never been banged around maliciously like some of the torture tests I have seen. I will possible confirm this tomorrow!
or
Is there something that I am missing on the rifle side of things?
Thanks
Sniper1* out!
I am attending an NTOA Precision Long Rifle II class so I went out this week to re-zero my AI AE w/ USO 3.2x17 Tpal for 168 Hornady BTHP (I have been shooting the 110 TAP for duty use). During this process I learned that I only needed to come 1 3/4 IPHY for a correct zero.
It should be noted that I have never had a Cold Bore deviation, or any other deviation unless it was shooter error with this gun.
After getting a good zero, I adjusted the turret caps and put it away until today.
Today went out and found that the cold bore was 1 1/2" low. With no adjustments to the scope the follow-up shots are dead on.
I thought to myself, well must have been me even though it felt good. I shot a few more and they were good as well. I decided to quit and come back later.
During the down time I checked the action screws for tightness (proper torque setting) and all appeared good. I did this with the rings as well.
Later, exact same thing. So, now I take the rifle and put it in the truck w/ AC on. Get it back out and shoot it again. Pretty decent (shooter error)! Now, I take the gun and bounce it on the butt of the rifle several times, as seen in the famous AI video (the scope is mounted in a 6/4 combo of Seekins rings). First shot - 1 1/2" Low - Follow-up shots are all good. Now, I shoot a few more and they are pretty good 1/2 moa or so. Bounce it again, 1 1/2" low with follow-ups falling right back into the "x".
I took the stock sides off and the action out and cleaned it (not dirty by any means) and put it back together. Pulled the scope and checked the base (good) rings and such again.
I am going back out tomorrow with another scope setup ready to go if needed.
Any thoughts from you guys?
I am wondering if scope some how took a crap! It has never been banged around maliciously like some of the torture tests I have seen. I will possible confirm this tomorrow!
or
Is there something that I am missing on the rifle side of things?
Thanks
Sniper1* out!
