Last reviewed: 2026-04-19 by Jake Terry, FFL07/SOT3, NRA-certified firearms instructor.
Winchester Deer Season XP 300 AAC Blackout deer ammo delivers a 150-grain Winchester Extreme Point polymer tip at 1900 feet per second and 1202 foot-pounds of muzzle energy. The large-diameter polymer tip drives rapid expansion through the first layers of tissue, while the contoured copper jacket and alloyed lead core maintain energy transfer through the vitals. This supersonic hunting load operates above the sound barrier, eliminating the subsonic trajectory arc that complicates holdovers on game at unknown yardage. Built for stand hunters working whitetail in moderate brush and hardwood ridges, where engagement windows run 50 to 150 yards and penetration through shoulder blade or rib is the baseline expectation.
Built for the Box
Winchester engineered the Extreme Point projectile with a tapered jacket profile that balances controlled expansion against terminal penetration. The 0.392 G1 ballistic coefficient maintains velocity better than flat-base soft points of equivalent weight, flattening trajectory and reducing wind drift on quartering shots. Brass cases accept Boxer primers and tolerate multiple reload cycles when sized and trimmed to spec. Each case mouth is crimped to hold bullet seating depth consistent across the production lot, minimizing the velocity spread that opens groups at distance.
Specs at a Glance
| Spec | Value |
|---|---|
| Caliber | 300 AAC Blackout (7.62x35mm) |
| Bullet weight | 150 grains |
| Bullet type | Winchester Extreme Point polymer tip |
| Muzzle velocity | 1900 fps |
| Muzzle energy | 1202 ft-lbs |
| Ballistic coefficient (G1) | 0.392 |
| Velocity rating | Supersonic |
| Rounds per box | 20 |
| Case | Brass |
| Primer | Boxer |
| Corrosive | No |
| Reloadable | Yes |
| Lead-free | No |
| Intended use | Hunting |
| Country of origin | United States of America |
| Manufacturer | Winchester |
The polymer tip initiates expansion at the front of the wound channel, while the contoured jacket holds the core together through bone and dense tissue. Supersonic velocities maintain flatter trajectories than subsonic loads, reducing the need for holdover adjustment on shots between 75 and 125 yards. Find more supersonic and subsonic options in our 300 Blackout ammo collection.
Safe Handling & Compliance
Federal law requires purchasers to be at least 18 years old for rifle and shotgun ammunition, and at least 21 for handgun ammunition. Ammunition cannot be shipped to certain states, counties, and cities — review our ammunition shipping restrictions before ordering. Store ammunition in a cool, dry location away from heat sources and out of reach of unauthorized users.
- Always treat every firearm as if it is loaded and keep the muzzle pointed in a safe direction.
- Verify your state and local laws regarding ammunition purchase, possession, and transportation before ordering.
- This ammunition contains lead. Wash hands after handling and follow California Proposition 65 guidelines if applicable in your jurisdiction.
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