Hornaday American Gunner vs. Frontier

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If your talking about the Hornady 123 grain BTHP sold as either Hornady Black or American Gunner 200 round box. The 123 grain BTHP Hornady ammo gets good reviews. I read no reports or product reviews on Hornady Frontier 6.5 Grendel Full Metal Jacket ammo. There have been numerous reports of problems with Hornady Frontier 223/5.56 ammo.