Last reviewed: 2026-04-18 by Jake Terry, FFL07/SOT3, NRA-certified firearms instructor.
For long-range hunters working elk, moose, or mule deer across open country, the Underwood 7mm Remington Ultra Magnum 160-grain Nosler AccuBond load delivers flat trajectory and terminal performance that holds together on heavy bone. The 7mm Remington Ultra Magnum is a belted magnum cartridge introduced in 2000 by Remington, offering significantly higher velocity than the 7mm Remington Magnum while maintaining the same .284-inch bullet diameter. This load pairs that high-intensity case with Nosler’s bonded-core AccuBond projectile — a copper-alloy jacket molecularly bonded to a lead-alloy core through a proprietary process that eliminates voids and ensures the jacket and core stay together through impact. The polymer tip initiates expansion on contact while the bonded construction holds 60-70% of the original 160 grains through deep muscle and bone, maximizing wound channel consistency at ranges past 400 yards.
Built for the Box
Underwood loads this round to 3300 feet per second muzzle velocity and 3870 foot-pounds of energy, driving the AccuBond’s streamlined profile (G1 BC 0.531, sectional density 0.283) to supersonic velocities well beyond 800 yards in most atmospheric conditions. Flash-suppressed powder preserves low-light vision if you’re shooting at dawn or dusk. Brass cases carry Boxer primers and are reloadable for handloaders who want to tailor seating depth or powder charge. Each primer pocket is free of sealant, and the brass is virgin-fired to Underwood’s pressure specifications. Non-corrosive propellant and primer chemistry ensure long-term storage without degradation. The polymer tip on the AccuBond resists deformation during magazine feeding and protects the hollow point from debris, then drives rearward into the core on impact to initiate controlled expansion. Underwood quality-controls every lot on ballistic gelatin and chronograph rails before releasing ammunition to retail channels.
Specs at a Glance
| Spec | Value |
|---|---|
| Caliber | 7mm Remington Ultra Magnum |
| Bullet weight | 160 grains |
| Bullet type | Nosler AccuBond Polymer Tip |
| Muzzle velocity | 3300 fps |
| Muzzle energy | 3870 ft-lbs |
| G1 ballistic coefficient | 0.531 |
| Sectional density | 0.283 |
| Rounds per box | 20 |
| Case | Brass |
| Primer | Boxer |
| Corrosive | No |
| Reloadable | Yes |
| Intended use | Hunting |
| Manufacturer | Underwood Ammo |
The 160-grain weight balances sectional density for penetration with velocity for flat trajectory, making this load suitable for shots from 200 to 600 yards on elk-sized game. Shop our full 7mm RUM ammunition selection for additional bullet weights and constructions.
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.
- Treat every firearm as if it is loaded; never point the muzzle at anything you are not willing to destroy.
- Verify state and local laws governing ammunition purchase, possession, and transport in your jurisdiction before ordering.
- This ammunition contains lead; minimize exposure during handling and ensure adequate ventilation when shooting indoors or at enclosed ranges.
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