Last reviewed: 2026-04-18 by Jake Terry, FFL07/SOT3, NRA-certified firearms instructor.
The Federal Premium Terminal Ascent 300 WSM ammo uses a 200-grain bonded polymer tip projectile engineered for long-range hunting applications where trajectory, wind deflection, and terminal performance converge. This 300 Winchester Short Magnum load exits the muzzle at 2810 feet per second with 3506 foot-pounds of energy, supported by a 0.608 G1 ballistic coefficient that keeps the bullet supersonic well beyond typical hunting distances. The Slipstream polymer tip initiates expansion at velocities 200 fps lower than competing designs, while the bonded copper shank and lead core retain weight through bone and tissue. AccuChannel groove technology reduces drag and stabilizes flight, delivering match-level accuracy in a hunting platform.
Built for the Box
Federal Premium manufactures the Terminal Ascent line in the United States with boxer-primed nickel-plated brass cases. The bonded construction bonds the lead core directly to the copper jacket, preventing core-jacket separation on impact. The patented Slipstream tip sits ahead of the bonded core, designed to flatten trajectories and trigger reliable expansion even when striking at reduced velocities encountered at longer ranges. The AccuChannel groove—a circumferential channel machined into the shank—minimizes bearing surface contact with the bore, reducing engraving friction and improving concentricity during launch. Each 20-round box ships with non-corrosive, reloadable cases ready for handloading after initial firing.
The Numbers
| Spec | Value |
|---|---|
| Caliber | 300 Winchester Short Magnum (WSM) |
| Bullet weight | 200 Grains |
| Bullet type | Bonded Polymer Tip (Federal Terminal Ascent) |
| Muzzle velocity | 2810 Feet Per Second |
| Muzzle energy | 3506 Foot Pounds |
| G1 Ballistic Coefficient | 0.608 |
| Velocity rating | Supersonic |
| Rounds/box | 20 |
| Case | Nickel Plated Brass |
| Primer | Boxer |
| Corrosive | No |
| Reloadable | Yes |
| Lead free | No |
| Intended use | Hunting |
| Manufacturer | Federal Premium (USA) |
The 0.608 ballistic coefficient provides a flat trajectory window that simplifies holdover calculations on elk, mule deer, and other big game out to 600 yards. For more loads in this chambering, browse our full 300 WSM ammo category.
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.
- Observe the four rules of firearm safety at all times — full guide at NSSF.org.
- Verify current state and local ammunition purchasing and possession laws before ordering.
- This product contains lead, a chemical known to the State of California to cause cancer and reproductive harm (Prop 65). Store in original packaging away from moisture and extreme temperatures.
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