Last reviewed: 2026-04-18 by Jake Terry, FFL07/SOT3, NRA-certified firearms instructor.
Federal Power-Shok 300 Winchester Magnum ammo bridges the gap between affordable practice volume and field-ready hunting performance. The 180-grain jacketed soft point (JSP) bullet design delivers controlled expansion on impact while maintaining enough sectional density for deep penetration through shoulder bone and heavy muscle. At 2960 feet per second and 3502 foot-pounds of muzzle energy, this load offers flat trajectory and retained velocity past 300 yards — critical when elk, moose, or mule deer present at distance. The 300 Winchester Magnum cartridge has anchored big game across North America since 1963, and Federal’s boxer-primed brass cases let you reload empties to offset magnum cartridge costs.
Performance at a Glance
Federal engineers the Power-Shok line around consistent ignition and bullet seating depth. The jacketed soft point construction features a lead core enclosed in a copper jacket with an exposed nose — on impact, the soft lead expands while the jacket controls fragmentation. This produces a mushroom profile that transfers energy into vital zones without excessive meat damage. Brass cases remain intact after firing, making them ideal candidates for resizing and repriming if you run a progressive press. Non-corrosive primers mean you can store loaded mags in a truck box through hunting season without worrying about moisture intrusion degrading the powder charge.
Specs at a Glance
| Spec | Value |
|---|---|
| Caliber | 300 Winchester Magnum |
| Bullet weight | 180 Grains |
| Bullet type | Jacketed Soft Point |
| Muzzle velocity | 2960 Feet Per Second |
| Muzzle energy | 3502 Foot Pounds |
| Rounds/box | 20 Round |
| Case | Brass |
| Primer | Boxer |
| Corrosive | No |
| Reloadable | Yes |
| Intended use | Hunting |
| Manufacturer | Federal Premium Ammunition |
If you zero at 200 yards, expect roughly 3 inches high at 100 and 8 inches low at 300 — adequate holdover for vitals on most North American game. The 180-grain weight balances wind deflection against retained energy; heavier bullets offer more penetration but drop faster, while lighter projectiles flatten trajectory at the expense of energy retention past 400 yards. For more 300 Win Mag ammo options, compare bonded cores and monolithic copper bullets if you hunt larger species or need California lead-free compliance.
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.
- Follow the four universal rules of firearms safety at all times
- Verify current state and local ammunition purchasing laws in your jurisdiction before ordering
- Store in factory packaging below 120°F; magnum cartridges generate higher chamber pressures than standard loads
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