Re: AR in 17 Remington
I've built 5 or 6 AR's in 17 Rem. Most with 18" .750" gas block, mid length gas systems. They all shot very well (shilen barrels and one Pac Nor if I remember right). They make a very good coyote/fox round but as stated above, don't hit the shoulder. 3900fps was more realistic with the 18-20" barrels and gas port needed to be smaller, around .073 if I remember correctly about that too. I used one for coyote for one winter, but went back to the 204 and 223 as they seemed to perform better when calling coyotes and that perfect broadside shot might not be presented. Not to mention spitting more expensive brass into the snow where it quickly disappears.