This is my first Grendel AR build barrel and it fitted my Gorilla and KM upper receiver perfectly. Have shot 40 round wolf 100 gr steel ammo at range For zero in and 100 yards 1 QT milk size bottles testing. Absolutely no feeding failure and accuracy is pretty good. I haven’t tried other ammo yet since there are ammo shortage nationwide. Fortunately Wolf does make affordable steel ammo for 6.5 Grendel which is a great buy since I have been using a lot of Russian steel Ammo made by Wolf, Tulammo for my 7.62x39 and 223 Rem. Why? Cost and affordability is top priority for shooting which is biggest savings. You could have some premium ammo for hunting, match target or self defence but not for daily shooting.
Reviewed by: (Verified Buyer) Michael Li from Las vegas on 6/14/2020