Last reviewed: 2026-04-18 by Jake Terry, FFL07/SOT3, NRA-certified firearms instructor.
Federal Premium 300 Winchester Magnum ammo chambered in 175-grain Terminal Ascent polymer tip represents a bonded-core solution for hunters demanding consistent terminal performance from muzzle to extended range. The 300 Winchester Magnum cartridge, standardized in 1963 and adopted by military and civilian long-range shooters worldwide, bridges the gap between moderate recoil and true magnum energy delivery. This load pairs that legacy with Federal’s Terminal Ascent construction — a bonded copper shank and lead core that retains weight through bone and tissue, while the patented Slipstream polymer tip drives expansion at impact velocities as low as 1,600 fps.
Built for the Box
The 175-grain Terminal Ascent projectile features AccuChannel groove technology — circumferential channels machined into the bullet shank that reduce bearing surface and aerodynamic drag. The result is a high ballistic coefficient that flattens trajectories and cuts wind deflection at distance. Bonded construction prevents core-jacket separation on close shots through heavy shoulder structure, while the Slipstream tip maintains low-velocity expansion capability when energy drops beyond 400 yards. Each round is loaded in nickel-plated brass with non-corrosive Boxer primers, reloadable for handloaders who chase sub-MOA precision.
Load Profile
| Spec | Value |
|---|---|
| Caliber | 300 Winchester Magnum |
| Bullet weight | 175 grains |
| Bullet type | Polymer Tip (Federal Terminal Ascent) |
| Rounds/box | 20 |
| Case | Brass (nickel-plated) |
| Primer | Boxer |
| Corrosive | No |
| Reloadable | Yes |
| Intended use | Hunting |
| Manufacturer | Federal Premium (United States) |
The Terminal Ascent line slots between traditional cup-and-core soft points and all-copper monolithics — delivering controlled expansion and weight retention without sacrificing BC or low-velocity performance. Hunters running bolt-action rifles with 24-inch or longer barrels will see full case capacity utilized, while the bonded construction handles magnum velocities without premature jacket separation. For more long-range magnum options, browse the full 300 Win Mag ammo catalog.
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 rules of firearms safety at all times — treat every firearm as if it is loaded, never point at anything you are not willing to destroy, keep your finger off the trigger until sights are on target, and be certain of your target and what lies beyond it.
- Verify current state and local laws governing ammunition purchase, possession, and transport in your jurisdiction before ordering.
- This ammunition contains lead, a chemical known to the State of California to cause cancer and reproductive harm. Wash hands after handling, and follow manufacturer storage guidelines.
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