Rate of Twist: Which “Should” shoot heavier bullets better?

[Mike D]

I have a 6.5 Creedmoor, with a 1 in 8, it likes 130 gr or lighter bullets, at least with Berger and Nosler Accubond Long Range. Berger says to go with 1 in 7 or faster for their 140 gr., I have found they are correct. My gun will only shoot about 1 1/2" groups, if that with their 140 gr. Elite Hunters and their VLDs, in 140 gr. Now with some older lower BC more common design hunting bullets, you might get away with a 140 gr bullet with a 1 in 8 in twist. Those extra long high BC bullets in 140 gr, did not work well in my 1 in 8 twist barreled gun.

A 1 in 9.5, would be for light weight varmint bullets.

Berger doesn’t recommend 1:7 with any of their 6.5 bullets even up to the 156 EOL, at least not that I can find.









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[Mike D]

OP you want the 1:8 twist rate.


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[Walker]

OP you want the 1:8 twist rate.


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Or faster as per all the charts.

[Mike D]

Or faster as per all the charts.

Well yes if you are doing custom but his choices were 1:8 or 1:9.5.

I see no reason to get a 1:9.5 twist barrel in a 6.5 Creedmoor.


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