Ammo not feeding

Just got a new honey badger in 300blk. I bought PSA 220g OTM subsonic just cause it was on sale, but I’m having issues with it chambering a round. Tried handful of different rounds and still not able to chamber any of them. Is it a PSA ammo thing? Do I need to break in the HB with better ammo before trying cheaper stuff. Haven’t even fired a round with it yet and don’t want to have issues with it at the range. Any help is appreciated. Thanks