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10mm Automatic, 170 Grain

USA Ready Defense
RED10HP $$
Be ready when you need it most. USA Ready Defense is a select grade of personal defense ammunition offering the ideal combination of stopping power, penetration and reliable expansion.
Rounds per box: 20
Rounds per case: 200
Hex-Vent™ Rigid Insert
Shields hollow point from obstruction while channeling material flow for positive bullet expansion
Match Grade Primer
Built to exacting specifications for trusted reliability
Lot Controlled
Ballistics data from each lot published online at Winchester.com/USAREADYINFO
10mm Automatic, 170 Grain Features
Look up your lot number

Every box of Winchester USA Ready ammunition includes a Lot Number that allows you to quickly and easily find ballistics data — including velocity, pressure and accuracy ratings — related to your box's lot. Start your search by using the Lot Number found on your box.

Your box's Lot Number is ink stamped inside the right tuck flap.
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