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two grouping?

 
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  #1  
Old 10-12-2009, 11:23 AM
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two grouping?

I have a rifle, 6X45 that I just cant seem to get it shooting right, it will shot two in one hole and then two more 1/4- 3/4 inch from the first. I have tried a few powders and a few bullets and get the same results most of the time. I thought i read somewhere it could be caused by bullet seating dept? if anyone has any thought I would be greatful

thanks
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  #2  
Old 10-12-2009, 05:18 PM
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Re: two grouping?

I don't know your problem for sure. But I wonder if you wear glasses?

I have had this same issue recently with guns well capable of better performance. Another 'clue' toward resolution IMO, is the fact that I shoot better, and better, the further out I go. And lastly, these occurances began with my astigmatism and eventual prescription.
I wouldn't be surprised if the answer to this might finally resolve the 'shrinking MOA' phenomenon.

Personally, I think it's parallax caused by less consistant eye position -shot to shot, at shorter ranges. I think my brain compensates for less than perfect focus up close(100yds), at high power, because it can.
But this is not the case 300 or 400yds out. I am forced to position for perfect focus, and this is leading to more consistant results.

Just throwing out ideas
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  #3  
Old 10-12-2009, 05:44 PM
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Re: two grouping?

dont wear glasses, and I have a few rifles and never had on do this so much, I shot two other guns smae day and they shot perfect
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Old 10-12-2009, 10:59 PM
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Re: two grouping?

Bedding? Scope?
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  #5  
Old 10-12-2009, 11:43 PM
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Join Date: Aug 2009
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Re: two grouping?

Quote:
Originally Posted by Mikecr View Post
I don't know your problem for sure. But I wonder if you wear glasses?

I have had this same issue recently with guns well capable of better performance. Another 'clue' toward resolution IMO, is the fact that I shoot better, and better, the further out I go. And lastly, these occurances began with my astigmatism and eventual prescription.
I wouldn't be surprised if the answer to this might finally resolve the 'shrinking MOA' phenomenon.

Personally, I think it's parallax caused by less consistant eye position -shot to shot, at shorter ranges. I think my brain compensates for less than perfect focus up close(100yds), at high power, because it can.
But this is not the case 300 or 400yds out. I am forced to position for perfect focus, and this is leading to more consistant results.

Just throwing out ideas
Thanks for this reply. I also suspect I have an astigmatism and my results from the bench are sometimes less than desirable. I will keep your comments in mind next time out to the range!

--Duck911
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  #6  
Old 10-13-2009, 12:26 PM
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Join Date: Mar 2006
Posts: 847
Re: two grouping?

You are right to consider seating depth.
Chris Matthews of Longshot Rifles mentioned a few years ago that double grouping can often be "cured" by adjusting seating depth.
I'd give it a try and see what happens.
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