18" 6GT velocity?

[6.5grendel]

Is anyone running a 6gt in a shorter barrel? If so what velocities are you getting? Specifically looking at 65-75gr projectile velocity.

 

[17VLD]

Not a 6GT but I ran a straight 6BR Encore 15” barrel for the Hunter class at the MOA Cold Turkey shoot in Wyoming a few years ago it is an 8 twist and I could get 2500fps with the 105s then later switched to the 95 Berger’s and got 2700fps so I could be in the node my buddies with the BRX and Dasher were at. This was before the GT brass was available.It got me in the shootoff but I felt a little more speed would have helped me against the Dashers and BRX guys.Back to your question I believe 3000+ with your bullet weights would be fairly easy with an 18”
I’m surprised none of the XP guys haven’t responded to your question yet, are you building an XP or a suppressed bolt gun,perhaps an AR? Depending what your quarry is I might look at the 87 VMax with its .400 b.c. I think an XP in a 6GT is a viable idea.
Good luck with your project.
Matt

 

[6.5grendel]

Not a 6GT but I ran a straight 6BR Encore 15” barrel for the Hunter class at the MOA Cold Turkey shoot in Wyoming a few years ago it is an 8 twist and I could get 2500fps with the 105s then later switched to the 95 Berger’s and got 2700fps so I could be in the node my buddies with the BRX and Dasher were at. This was before the GT brass was available.It got me in the shootoff but I felt a little more speed would have helped me against the Dashers and BRX guys.Back to your question I believe 3000+ with your bullet weights would be fairly easy with an 18”
I’m surprised none of the XP guys haven’t responded to your question yet, are you building an XP or a suppressed bolt gun,perhaps an AR? Depending what your quarry is I might look at the 87 VMax with its .400 b.c. I think an XP in a 6GT is a viable idea.
Good luck with your project.
Matt

Thank you. It will be a suppressed bolt gun for coyote hunting at night. Wanted the short barrel so I'm not catching it on everything in the middle of the night.

 

[David Brooks Rifle Stocks]

Not sure this really helps you any, i was running a 24" with 105 Hybrids and RL16 at 3010 real easy, i pushed it to 3110ish, it was a laser. Guessing you could get the 65-80+ grains to 3000 pretty easy in an 18" barrel