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What is my problem with my vertical all of a sudden?

 
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  #1  
Old 09-02-2011, 07:04 PM
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Join Date: Jan 2010
Location: NC mountains
Posts: 508
What is my problem with my vertical all of a sudden?

Ok, so when I first got my gun tuned in it was shooting .3-.5" at 100yds.
Was shooting very well out to 400 and 600 yards a few months ago.
Went shooting few weeks ago and was all over the place (this was at the same 400 and 600yd spot that was no challenge just a few months prior). I just chalked it up to me having a bad day.
Went to the 100yd range today with my son. After shooting my rifle I felt like throwing it off a bridge. My windage was perfect. However, my vertical has me on the verge of blowing a gasket somewhere in my cranium.
My first six shots at 100yds:

1) 3.5" high
2) 2" high
3) 1" high
4) bullseye
5) 1.5" high
6) bullseye

Let the barrel cool. Shot two shots:
1) bullseye
2) 1.5" high

Let the barrel cool. Shot two shots:
1) bullseye
2) 1.25" high

Let the barrel cool. Shot two shots:
1) bullseye
2) cut the same hole

Here is a link to a picture of the target:

http://i59.photobucket.com/albums/g3...f/IMG_3457.jpg

If anyone has an idea as to what the problem is, please enlighten me.

Last edited by CRNA; 09-02-2011 at 07:10 PM.
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Old 09-02-2011, 07:08 PM
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Join Date: Feb 2007
Location: Townsend, Montana.
Posts: 7,904
Re: What is my problem with my vertical all of a sudden?

I had this once with a rifle in a wood stock. Durring the high humidity times of year it all went to crap. I restocked it and bedded the action and it was good to go year round.


Also have seen something like this with a Leapold scope that was going south.


Hope this helps.

Jeff
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  #3  
Old 09-02-2011, 07:41 PM
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Join Date: Jan 2010
Location: NC mountains
Posts: 508
Re: What is my problem with my vertical all of a sudden?

Quote:
Originally Posted by Broz View Post
I had this once with a rifle in a wood stock. Durring the high humidity times of year it all went to crap. I restocked it and bedded the action and it was good to go year round.


Also have seen something like this with a Leapold scope that was going south.


Hope this helps.

Jeff

Hadn't really thought about the humidity. But come to think of it, it has only been acting up since it has been hot and humid. Maybe just a coincidence and maybe not. I have the factory Accustock that has not been bedded.
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Old 09-03-2011, 12:05 AM
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Join Date: May 2011
Location: Eldorado,KS
Posts: 87
Re: What is my problem with my vertical all of a sudden?

I had the same issue and my problem was my scope. And it was a leupold. It shoot excellent put it in the safe went to check zero a few weeks before season. Its a rifle i dont use but once in a blue moon and it was all over the place. Would not adjust neither sent it in to leupold and something inside shot **** on it. they fixed it and have not had an issue since.
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Old 09-03-2011, 11:23 AM
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Join Date: Jan 2010
Location: NC mountains
Posts: 508
Re: What is my problem with my vertical all of a sudden?

Quote:
Originally Posted by deerhunterjj View Post
I had the same issue and my problem was my scope. And it was a leupold. It shoot excellent put it in the safe went to check zero a few weeks before season. Its a rifle i dont use but once in a blue moon and it was all over the place. Would not adjust neither sent it in to leupold and something inside shot **** on it. they fixed it and have not had an issue since.
I didn't try to adjust anything, so I don't know if that is an issue or not. I guess before we go any further I should be more specific about what I am shooting:

Savage Model 111 in 7mmRM with accustock and accutrigger
McGowan 28" Stainless Steel Match, Varmint contour, 1:9 twist
Harris S-bipod
Nightforce one piece 20MOA base
Nightforce ultralight rings
Nightforce NXS 5.5-22X56


I am trying to blame other things on this problem such as my shooting position. The benches at the range can never let me find a really comfortable spot, but I just don't see me missing the target by 3.5" at 100 yards. Not when I was shooting groups the size of a tennis ball with the same rig at 600yds just a few months ago. This has really got me frustrated, especially with hunting season just around the corner.
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  #6  
Old 09-03-2011, 12:12 PM
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Location: NW Mt.
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Re: What is my problem with my vertical all of a sudden?

Bore scope the barrel. Could be copper fouled, throat could be going or more likely look
for a damaged muzzle crown. I had a 22.250 barrel that I shot the muzzle out on. Set it
back and it didn't help much. Ball mic'd the muzzle and it was .0015 bigger than the
bore for 1/2- 3/4 of an inch. Cut it off and re-recrowned and wha la! Had my gun back.

Last edited by Loner; 09-03-2011 at 12:18 PM.
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  #7  
Old 09-03-2011, 03:20 PM
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Join Date: Jan 2010
Location: NC mountains
Posts: 508
Re: What is my problem with my vertical all of a sudden?

Quote:
Originally Posted by Loner View Post
Bore scope the barrel. Could be copper fouled, throat could be going or more likely look
for a damaged muzzle crown. I had a 22.250 barrel that I shot the muzzle out on. Set it
back and it didn't help much. Ball mic'd the muzzle and it was .0015 bigger than the
bore for 1/2- 3/4 of an inch. Cut it off and re-recrowned and wha la! Had my gun back.
Well, the barrel was just freshly scrubbed, so I know that it wasn't copper fouled. I don't think the throat would be going this soon, as I have less than about 200 rounds through it with a conservative load. I guess the muzzle is a possibility, but I am pretty meticulous about not letting anything touch the muzzle, which is a recessed target crown.
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