I am collecting components to build an AR-15 upper in 6.8 SPC...........Open to any advise & any input.
What is the best twist rate & best number of barrel groves for 115 gr. to 130 gr. bullets. This will a walk'about rifle mostly, with a secondary application of use for Alaska Big Game hunting, hence the use of heavier weight bullets for 6.8 SPC.
Interested in suggestions of barrel makers for this build. Thinking "Fluted" 18" or maybe 20" and for sure Stainless Steel.
Thanks for any help.