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Group Problem

 
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  #8  
Old 07-07-2012, 12:54 AM
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Join Date: Feb 2011
Location: Halfway between Lubbock and Dallas
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Re: Group Problem

Quote:
Originally Posted by RLA View Post
I have tried 200 AB's and they would not group at all.
Take a cleaning rod with a tight fitting patch.

Insert it a couple of inches. Mark a dot on the rod, and the end of the muzzle as an index point. Put additional dots on the rod at 1" intervals.

Slowly insert it, and count the inches to a full rotation.

Make sure it's a 1:10 vs a 1"11-1:12.
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  #9  
Old 07-07-2012, 12:30 PM
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Re: Group Problem

Sounds like a seating depth and extreme spread problem.
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  #10  
Old 07-07-2012, 05:04 PM
RLA RLA is offline
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Location: Coeur d' Alene, Idaho
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Re: Group Problem

WildRose, the barrel has about 250 round through it. It was a clean barrel. The fouling shot is usually not that far out of the group at 100 yards.

I do have the bullet way out there at 3.875 10 thou off the lands. I will start messing with seating depth.
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  #11  
Old 07-07-2012, 05:52 PM
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Re: Group Problem

If it was mine i'd start with them .010" in the lands and switch to retumbo, and check the whole thing over and make sure everything is tight.
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  #12  
Old 07-07-2012, 07:40 PM
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Join Date: Mar 2012
Location: Calgary, AB
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Re: Group Problem

The scope is known to be good and hold zero?

Try seating the bullet a little farther out, kissing the lands.

If that doesn't work, try a different powder.

It's not likely to be a bedding problem, but the barrel is floated, I assume?

How is the trigger? If it's too heavy, that could be causing problems.

What kind of shooting rest are you using? A hard front rest, or an inconsistent rest will cause problems.

How's the muzzle crown?
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  #13  
Old 07-07-2012, 11:22 PM
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Re: Group Problem

Quote:
Originally Posted by RLA View Post
WildRose, the barrel has about 250 round through it. It was a clean barrel. The fouling shot is usually not that far out of the group at 100 yards.

I do have the bullet way out there at 3.875 10 thou off the lands. I will start messing with seating depth.
Seating the bullet out a little farther might tighten things up for you but be careful to watch for pressure signs.

Also like BW suggested check the torque on your actions bolts/screws and be sure it's tight and even. Also double check on your rings/scope mount.

If you have a load that has been shooting better for you in the past, run a few of them through it and compare.
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Last edited by WildRose; 07-08-2012 at 01:23 AM.
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