Last reviewed: 2026-04-19 by Jake Terry, FFL07/SOT3, NRA-certified firearms instructor.
Waterfowl hunters working flooded timber and open water face a recurring problem: choke and shot size that patterns tight at 15 yards scatters thin at 40, and a long-range load punches holes in the pattern at close shots. The Remington Nitro Steel Duplex Field & Timber 12 gauge steel ammo solves it by stacking two shot sizes — #2 and #4 steel — in the same 1-1/4 oz payload. Launched at 1450 fps from a 3″ 12 gauge hull, the duplex blend gives you dense coverage inside 25 yards from the smaller #4 pellets, while the larger #2 shot maintains energy and penetration to 45 yards. Non-toxic steel meets federal and state waterfowl mandates. Boxer-primed hulls are reloadable. Ten boxes of 25 rounds — 250 shells total.
Load Profile
Remington drives the duplex payload to 1450 fps — fast enough to flatten trajectory over decoys and keep time-of-flight short on passing shots. The wad system cushions both shot sizes during acceleration and releases them into a blended column that maintains pattern density across a wider yardage window than single-size steel. High-base construction and a drab-finish hull reduce glare in layout blinds and boat hulls.
The Numbers
| Spec | Value |
|---|---|
| Gauge | 12 Gauge |
| Shell length | 3″ |
| Shot type | Steel |
| Shot weight | 1-1/4 oz |
| Shot size | #2 and #4 (duplex) |
| Velocity | 1450 fps |
| Rounds/box | 25 (10 boxes = 250 rounds) |
| Primer | Boxer |
| Reloadable | Yes |
| Corrosive | No |
| Non-toxic | Yes |
| Intended use | Waterfowl |
| Manufacturer | Remington |
Duplex loads suit hunters who encounter variable range conditions in a single session — decoying mallards at 20 yards, then passing teal at 35. You keep one choke in the gun and let the dual-size shot column handle the pattern work. Compatible with improved cylinder through full chokes; modified and improved modified are common starting points. Browse our full steel shot shells inventory for single-size steel and other duplex configurations.
Safe Handling & Compliance
Federal law requires purchasers to be at least 18 years old for shotshell 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 federal, state, and local regulations — non-toxic shot is required for all waterfowl hunting on federally managed lands and waters.
- Pattern your shotgun with duplex loads before the season — dual-size steel pellets produce unique pattern densities that vary by choke constriction.
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