Long recognized as a superb choice for hunters, the 7mm (.284) bore size is now attracting great interest among long-range match shooters as well. The 7mm occupies the "sweet spot" between 6.5mm and 30 caliber--with an optimal balance between bullet weight and BC. It's hard to beat 7mm ballistics with either a 6.5mm or a reasonably-sized 30, and the 7mm will give longer barrel life than a 6.5 mm with less recoil than a 30-caliber (of equal BC). To match the ballistics of a 7mm 180gr VLD with a 30-caliber bullet, you must move up dramatically in bullet weight--to a 210gr or larger bullet. To drive the heavier 30-caliber bullet at similar velocities, you'll need more powder. More powder and a much heavier bullet weight means more recoil (and attendant fatigue) for the 30-caliber shooter. The combination of great ballistics with manageable recoil has made the 7mm cartridge a favorite among long-range prone and benchrest shooters. The chamberings of choice are the .284 Winchester, 7mm Winchester Short Magnum (7mm WSM), and 7mm Remington Short Action Ultra-Magnum (7mm SAUM). For silhouette shooters and hunters, the 7mm-08 is a top choice (but not the only choice).
7mm family portrait: (left to right) 7mm-08 Rem, 7mm Mauser, .284 Win, .280 Rem, 7mm SAUM, 7.21 Lazzeroni Tomahawk, 7mm WSM, 7mm Rem Mag, 7mm Wby Mag, 7mm Dakota, 7mm STW, 7mm Ultra Mag and 7.21 Lazzeroni Firebird.
New Interest in the .284 Winchester For many years, the "original" .284 Winchester lived in the shadow of the smaller 6.5-284. That is all changing. Today there is great interest in the .284 Win.