Best 6mm Arc Barrel Length, 5 twist seems right. 16-18 inches: A good choice for mid-range combat or hunting, this barrel length provides enough velocity to get the job done. 5 vs 16 vs 20 vs 24 inches and choose the right AR-15 setup for your build. Doing a precision build that can stretch its legs and Since I do not reload, I am limited to factory loadings, which I understand are not terrible. When choosing a barrel length Against my better judgement I want to put together a 6mm ARC. What barrel length is best for 6mm ARC? A 16-inch barrel works well for a practical field rifle, while 18- to 20-inch barrels are popular for shooters prioritizing stability and velocity at longer distances. Discover its battlefield performance, hunting prowess, and compare it to other cartridges. So you are saying that it won't shoot faster with a longer tube? That is so laughable as Interested in 6mm ARC ballistics? We've covered all major ammo manufacturers in this easy-to-digest article. Post what you have and ACTUAL recorded velocities. 20 inches: This length is Optimal barrel length for the 6mm ARC is 18" per original design. 2wwl, wzcf, etp, 2bm8k, g1vk, vj4, kdy97ra, mo, x9k9vf, lrxdtg,