Description

300 Winchester Magnum -300 Win Mag , 300 WM brass for sale.

Factory new NORMA unprimed 300 WINCHESTER MAGNUM brass cases, 50 PER.  

actual case not pictured.

Released in 1963, Winchester’s .30-caliber magnum based on the 338 WM with shoulder moved forward  creating a shorter neck.  To offset this bullets are seated deeper.