#### Bill Norton

##### Member

Hi all,

I'm about to order a new barrel for my Blaser R8 and I have decided on a 6.5-280ai. I have a few bullets in mind and I ran the calculations through the Berger Twist Rate Stability Calculator and it says a 1:7 is very stable. My question is the Berger calculator pretty accurate? Hornady says a MINIMUM of 1:8 is needed for the 143 ELD-X but the calculator says something different so I guess I'm confused... Thanks in advanced!

Hornady 143gr ELD-X

1:7

Hornady 143gr ELD-X

1:8

Berger 140 VLD

1:7

Berger 156 Elite Hunter 1:7

I'm about to order a new barrel for my Blaser R8 and I have decided on a 6.5-280ai. I have a few bullets in mind and I ran the calculations through the Berger Twist Rate Stability Calculator and it says a 1:7 is very stable. My question is the Berger calculator pretty accurate? Hornady says a MINIMUM of 1:8 is needed for the 143 ELD-X but the calculator says something different so I guess I'm confused... Thanks in advanced!

Hornady 143gr ELD-X

1:7

Hornady 143gr ELD-X

1:8

Berger 140 VLD

1:7

Berger 156 Elite Hunter 1:7