Another thread about barrel length: How short can one go and still hit 1000 yards?

[Bjorn]

I used to think that a long barrel was required for long range shooting. A proper predator rifle had to be 22" or longer and that sort of thing. Then I started reading about LaRue winning long range competitions with 16" barrels. I believe those were 7.62x51. So, I eventually came around to the idea that a short barrel can be accurate at distance. What I don't know without researching is what velocity you could get out of 16" barrel with a Grendel. Like tdbru says, you would have to do some homework. I will note that when LaRue was building a Grendel, it was with an 18" barrel. Alexander Arms offers a 16" tactical rifle, but I would not think that version is meant as a long range shooter. AA's other versions have 18" and 20" barrels. 18" to 20" may be the sweet spot for Grendel barrel length, at least according to what presumably knowledgeable builders are offering to the public.

There are a few here that know that development of the Grendel very well. Some of them might chime in and let you know what they are using at 1,000 yards.