6.5 rate of twist

[cokerscoatings]

Have a 6.5 creedmore, 18” barrel, 1-8 twist rate running suppressed in a bolt. What the lowest bullet grain weight I could run and stabilize???

 

[AIAW]

JBM Miller Stability Calculator

 

[bschneiderheinze]

I ran 123's fine out of a 22" 1/8 but you would probably be marginal with 18" unless you were really pushing them

 

[cokerscoatings]

Thanks, probably just gonna run factory load ELDM

 

[Boostinmarc4]

I've never had a problem with bullets 123 gr and higher, that said I would imagine you should be okay down near the 100gr mark. If you get two holes from one shot on paper you'll know I was wrong. ?

 

[260284]

I played with the 90gr TNT in my 260. They shot really well out of a 1-8".

 

[EchoDeltaSierra]

What's your use? I run 140s at 2800fps out of a suppressed 1:8 21" . That seems to be a good BC/velocity combination.

 

[JoedirtPNW]

All depends on use, a few factory rifles are offering a 1:7 twist. 1:7 should work great for heavies and all copper. Nothing wrong with 1:8 its the most popular.....