When Kentucky Gun Co sent the Diamondback FS Nine for testing, I also requested to borrow an H&R Handi-Rifle in 300 Blackout (review in the works). Unfortunately, there’s nothing chambered in 300 BLK in my gun safe and I was fresh out of any ammo in the caliber from almost two years ago when I last shot it. A trip to two local gun shops left me empty-handed, but my local shooting range pulled through. They had a few boxes of Gorilla Ammo‘s subsonic 300 BLK on hand and, while there was a slight tingle of recognition in my mind, I wasn’t actually sure if I’d heard of the brand before. They said it was really nice stuff so I bought two boxes . . .