Scenar L for 6.5 x 284?

[jmatters]

Had trouble with a 155 keyholing in a 20mph headwind at Piedmont. Anyone have experience with the 136gr Scenar L in a 8.5 twist for 600 yards?

 

[/VH]

I've shot a few out of a 6.5x47 with an 8.5 twist at 600, 800 and 1000 yards, at about 4700' elevation; they shot very well.

 

[Ringostar]

I have only tried them in a 6.5x47L with a 8:1 twist. They shoot extremely well in that set up. I have a couple 8.5 twist 260's that I'm going to try them in. Your 8.5 might be a little slow twist for a 155. I have found that as you increase the twist rate, the torque also increases. I will not get another 8.5 twist 284 barrel, only 9 twist there. I haven't been able to compare the 6.5's on this yet because mine are different cartridges, but I feel the 8.5 twist should be fine for any 130-140 weight bullet.

 

[jmatters]

I've shot a few out of a 6.5x47 with an 8.5 twist at 600, 800 and 1000 yards, at about 4700' elevation; they shot very well.

4700 !!!! Did you mount the gun on a Cessna?
Thanks for the feedback!

 

[jmatters]

I have only tried them in a 6.5x47L with a 8:1 twist. They shoot extremely well in that set up. I have a couple 8.5 twist 260's that I'm going to try them in. Your 8.5 might be a little slow twist for a 155. I have found that as you increase the twist rate, the torque also increases. I will not get another 8.5 twist 284 barrel, only 9 twist there. I haven't been able to compare the 6.5's on this yet because mine are different cartridges, but I feel the 8.5 twist should be fine for any 130-140 weight bullet.

I'm thinking 8.5 is on the ragged edge of stability for the 140 range bullets, but it shot the 142 Sierra's pretty well. I' going to try the 120's first and see how they shoot. Thanks!

 

[/VH]

4700 !!!! Did you mount the gun on a Cessna?
Thanks for the feedback!

Not yet!

 

[/VH]

I'm thinking 8.5 is on the ragged edge of stability for the 140 range bullets, but it shot the 142 Sierra's pretty well. I' going to try the 120's first and see how they shoot. Thanks!

You may be right. For what it's worth, I've shot the 136 Scenar Ls, 139 Scenars, 142 Precision Ballistics, 140 Berger VLDs and 140 Hybrids through my 8.5 twist, (up here) and they all do fine.