Why am I getting horizontal grouping vertical is good

[clem81]

I'm loading a 6.5SLR and I keep getting horizontal wide groups, very least is great. My gun has a 8.4 twist obermeyer barrel and I'm shooting 123 Sierra mk at around 3000 fps. Manners T5a stock bedded vortex 6-24 pst . I thinking it could be the stock and grip pulling the shot kinda driving me wacky can't figure it out

 

[Tim Singleton]

Can you post any pic

 

[jsthntn247]

Tweak you powder charge a few tenths up or down and see what that does. Then do the same with seating depth.

 

[mac86951]

Check trigger fundamentals and or firing pin lock time (spring / pin drag) too
-Mac

 

[Dusty Stevens]

Sure sign of a lack of wind flags. Some call it a "waterline" we br shooters call it a weather report.

 

[Grimstod]

Seating depth needs tunning.

 

[22BRGUY]

Seating depth needs tunning.

+1

 

[billlarson]

I'm loading a 6.5SLR and I keep getting horizontal wide groups, very least is great. My gun has a 8.4 twist obermeyer barrel and I'm shooting 123 Sierra mk at around 3000 fps. Manners T5a stock bedded vortex 6-24 pst . I thinking it could be the stock and grip pulling the shot kinda driving me wacky can't figure it out

USE SOME WIND FLAGS...........

 

[JohnKielly]

Just because you have good vertical doesn't mean you have good tune. Over a range of loads and/or seating depths, groups could be expected to string either horizontal or vertical when a ways off tune, then progressively close in to the best grouping available before they string out on the other axis when you go beyond tune in the other direction.