Description
Rio's Heavy Field line was purpose-built for 16-gauge enthusiasts who want quality ammunition without the premium price tag. This load pairs a 1 1/8 ounce payload of #6 shot with a 2.75 inch plastic hull and delivers a solid 1300 feet per second muzzle velocity. That velocity helps flatten trajectory at typical hunting distances, which matters when you're tracking pheasant across a field or working rabbits through brush.
What Makes the Rio RCHV166 Stand Out
Rio engines these shells with purpose-selected primers, powders, and wads designed to work together for tight, consistent patterns. The spec sheet shows what you'd expect from a game load, but what really counts is how it patterns in your shotgun. The 1 1/8 ounce shot weight sits right in that sweet spot for 16-gauge upland work, giving you enough pellets in the pattern to count while keeping recoil manageable. That's especially nice if you're burning through a box during a long day in the field.
Who Should Buy Rio Heavy Field 16ga Shells
If you shoot 16-gauge and hunt upland birds like pheasant and grouse, or small game like rabbits and squirrels, these are worth trying. The #6 shot size pairs well with those applications. Many 16-gauge shooters struggle to find consistent ammunition since manufacturers lean toward 12 and 20 gauge, so when Rio dedicates a whole line to sub-gauge shotguns, it's worth paying attention. The loading is straightforward and manufactured at Rio's Texas facility, which keeps quality consistent from box to box.
Key Specifications
- Gauge: 16
- Shell Length: 2.75 inches
- Shot Weight: 1 1/8 ounces
- Shot Size: #6 Lead
- Muzzle Velocity: 1300 fps
- Rounds per Box: 25
- Manufacturer Part Number: RCHV166
- UPC: 8435101625456
- Primer: Centerfire
- Hull Material: Plastic
- Manufacturer: Rio Ammunition
What’s Included
- 25 shotgun shells, 16 gauge 2.75 inch
Frequently Asked Questions
What kind of game is Rio RCHV166 ammunition best for?
This load works well for upland birds like pheasant and grouse, plus small game including rabbits and squirrels. The #6 shot size provides good pattern density without excess recoil, making it practical for moderate-range hunting where you need consistent patterns round after round.
How does the muzzle velocity of these shells compare to other 16-gauge loads?
At 1300 fps, the Rio RCHV166 delivers solid velocity for its class. That velocity helps maintain energy downrange and keeps your shot string reasonably flat, which is useful when hunting at typical field distances. The heavier 1 1/8 ounce payload pairs with that velocity to deliver respectable downrange performance.
Why is 16-gauge ammunition harder to find than 12 or 20-gauge?
Most ammunition manufacturers focus production on 12 and 20 gauge because those gauges outsell everything else. Rio's willingness to produce dedicated game loads for 16 gauge reflects their commitment to serving that niche market. If you shoot 16-gauge, Rio's Heavy Field line is worth stocking because availability can be unpredictable elsewhere.
Are Rio shells reloadable?
Rio uses plastic hulls with centerfire primers, making them reloadable for those who reload shotgun ammunition. Before reloading any ammunition, make sure you have the proper reloading equipment and follow established reloading protocols for safe and consistent results.





Reviews
There are no reviews yet.