WHAT DOES 17 HORNET BRASS MEAN?

Wonderful high-quality as you would probably expect From Hornady. I’ve searching for months and was joyful I discovered it listed here. Only regret is not buying far more.The only warning I would increase is on the market brass. For bolt guns I became some a brass snob. My Hornady brass in 17 Hornet wasn't good. Some primer holes have been pretty