.27 Nosler, One Cartridge not a box: .27 Nosler by Nosler, U.S.A., factory loaded  with “New” Nosler Brass with a “-NOS- 27 Nosler” Head-Stamp and a Nosler 165 grain ABLR (Accubond Long-Range Bullet) or PCHP (Plastic Covered Hollow Point projectile.

History of the .27 Nosler:
The .27 Nosler was introduced in 2020 joining 6 other nosler cartridges; .22, .24. .26. .28 .30 and .33 Nosler calibers.
The .27 Nosler (.270 caliber or .277" or 6.8mm)  was designed to fill the space between the .26 Nosler (.260 Caliber, .264" or 6.5mm ) and the .28 Nosler (.280 Caliber, or .284" or .7mm)

With Energy up to almost 3,700 pounds per square inch and muzzle velocity up to 3,300 (feet per Second) for projectiles from 140 grain to 165 grains