powder. The .33 Nosler is built on the same action length as the .338 Winchester Magnum but launches projectiles at a higher velocity. Availability The .33 Nosler was released in 2017 with Nosler supplying ammunition and components. Nosler is also offering rifles chambered in the .33 Nosler in its Liberty and Heritage lines, with the first rifle being the M48 Western. See also .338 Winchester Magnum .338 Lapua Magnum 6.5-300 Weatherby Magnum 6.5 Creedmoor 6.5x55 Swedish References Pistol and rifle cartridges Nosler