Horizontal grouping

F

Frankr

Member
How do you cure Horizontal grouping ?

Have you ever had shooter induced Horizontal group's..say like three in a hole and one cutting on the left and right...for say a .400 horizontal slit.(100yrd)

Have had plenty of vertical grouping problems and have them kind of under control but now i seem to be having some horizontal troubles..
Say shoot a group at 200 yrds and have some horizontal in the group as if it was too wind sensitive and go up on the powder to try and fix that,then big big spitter groups..lol.. Then the load seems to be there and shooting but i really think i'm the horizontal problem. Bad scope ?
 
Most of my shooting during the past several years has been in the wind free environment of the tunnel. One thing that continues to repeat with every gun, barrel and bullet combination I have worked with is that horizontal dispersion results from the bullets being seated too far into the lands and vertical dispersion is the result of the powder charge being either too hot or too light.

Daryl Loker told me years ago that you tune out the horizontal with neck tension and bullet seating depth, then tune the vertical out with the load. (Or in recent years since the advent of tuners, with the tuner.)

I assure you, if I put my standard load of powder in and seat the bullets on hard jam, I'll have two bullet holes of built in horozontal, and that's in a tunnel with no wind! Start pushing the bullets back into the case .005 at a time and the horizontal will disappear just when the bullets come off the lands or just kissing. You might as well keep this to yourself after you see it with your own eyes because no one will believe you if you try to tell them; it goes completely against conventional wisdom. :rolleyes:

Gene Beggs
 
Ha that is funny, I was actually thinking i was going to try just off the lands to see what would happen, and the bullet i'm shooting has seemed to work well in other rifles as far as .020 jump..so .005 to .010 off touching was where i was going..But i will start at touch and move back .002 at a time to see if it goes away.
Thanks Gene i'm going to try it.
 
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