[GZire]

Based on this site, it looks like the HK417 will be produced at a 1:11 twist rate with a lands/groove rifling.
http://www.heckler-koch.de/HKWebText/detailProd/1928/345/4/19


My question is what would the optimal barrel length be for 168/175 grain ammo? Available barrel lengths are 12"/16"/20".

 

[sniper1]

Based on this site, it looks like the HK417 will be produced at a 1:11 twist rate with a lands/groove rifling.
http://www.heckler-koch.de/HKWebText/detailProd/1928/345/4/19


My question is what would the optimal barrel length be for 168/175 grain ammo? Available barrel lengths are 12"/16"/20".

20 would be my vote

 

[mikecleonard]

16" is about 2" on the short side...and 20" is about 2" on the long side. 18" would be about perfect but oh well.

 

[Johnnyc]

buy a 20" and have it cut to 18"