Please note: in the above picture, the picture on the right, for size comparison: Left .223 vs .277 on Right.
One Cartridge, not a Box: .277 Wolverine, live custom loaded ammunition using new brass with “*∩* 277 WLV” Head -Stamp loaded with 115 grain Sierra HPBT (Jacketed Hollow Point Boat-tail) projectile.
For more versions of this caliber see below.
History of the .277 Wolverine cartridge: .
The .277 Wolverine (6.8×39mm) originally started off as a wildcat cartridge developed and marketed by Mark Kexel, President of Mad Dog Weapon Systems.
Brass became available in 2018.It was developed for the AR-15’s platform rifles and pistols which if chambered in .223 Remington (5.56×45mm NATO) caliber will only require a new barrel to upgrade/convert any 5.56-based firearm to .277 Wolverine
