3-Inch vs 3.5-Inch Shells for Goose Hunting

The verdict

Most goose hunters do not need 3 1/2-inch shells, and the ones who do know exactly why. The extra half inch buys roughly 15 to 20 percent more shot, and it charges you in recoil, in price per box, and in which guns you can buy. Over a decoy spread where geese finish inside 35 yards, a 3-inch load of BB or BBB does the job and you will shoot it better because it hurts less. Where the 3 1/2 earns its place is pass-shooting, big open fields, late-season birds that hang at the edge, and hunters who want the heaviest payload available in a single trigger pull.

There is also a quieter argument against the big shell that nobody markets: several of the best goose loads made are not offered in 3 1/2 inch at all. HEVI-Shot loads HEVI-Metal Xtreme in 3-inch only, in both 12 and 20 gauge. If the shell you want most is a 3-inch shell, the chamber size stops being an advantage.

The published arithmetic

The cleanest comparison is within a single line, because the wad, the shot and the powder stay the same. Winchester publishes Blind Side 2 at 1 3/8 ounces in the 3-inch shell and 1 5/8 ounces in the 3 1/2-inch. That is a gain of a quarter ounce, or about 18 percent more pellets in the air. Boss splits its Wicked Blend the same way: 1 1/4 ounces in the 3-inch and 1 1/2 ounces in the 3 1/2-inch, both at 1,450 fps. Kent publishes payloads from 1 1/16 ounces up to 1 3/8 ounces across 2 3/4-inch, 3-inch and 3 1/2-inch Fasteel 2.0.

So the honest headline is: about a fifth more shot. Not double, not a different class of gun, and not a substitute for getting birds closer. What that fifth buys you is pattern density at the far end — the difference between a 40-yard pattern with gaps in it and one without — which is exactly the distance where geese are either killed cleanly or crippled.

Density matters more than length. A 3-inch tungsten-blend load can carry more downrange energy than a 3 1/2-inch steel load, because the pellets are denser. Buying a bigger shell full of plain steel is the least efficient way to solve a range problem; buying a denser pellet in a 3-inch shell is usually the better one. Our goose load roundup sets out what each material does.

What the extra half inch costs

Recoil. More shot moving at the same speed means more recoil, and it scales roughly with payload. A morning of 3 1/2-inch shells out of a 7-pound gun is genuinely punishing, and the cost is not just comfort: recoil builds flinch, and a flinch costs more geese than a quarter ounce of shot ever saves. This is why the softest-shooting guns in our shotgun roundup are the gas-operated ones with published recoil-reduction systems, and why the heavier guns are not automatically the worse buy.

Money. A box of 3 1/2-inch shells costs more than the same line in 3-inch, every time, and goose hunting is not a one-box sport. Over a season the difference is real, and it is money that could have gone into more decoys — which affect how close birds finish, which affects everything.

Gun choice. Not every waterfowl gun is chambered for it. The Mossberg 940 Pro Waterfowl is a 3-inch gun, and so is every pump on our budget shotgun page. If you decide you want 3 1/2-inch capability, you have narrowed the field before you have looked at fit, weight or finish, and fit matters more than chamber length.

Cycling. A gun chambered for 3 1/2-inch shells has to handle everything from a light 2 3/4-inch load up, and gas guns in particular can be fussy at the bottom of that range. Modern designs handle it, but it is one more variable in a gun that lives in mud and ice.

The gun question

If you are choosing a gun rather than a shell, the chamber is a permanent decision and the shell is not. A 3 1/2-inch gun shoots 3-inch and 2 3/4-inch shells perfectly happily, so the chamber is optionality: buy it and you can ignore it, skip it and you cannot add it later. That is the honest case for buying the bigger chamber even if you rarely load it, and it is why most dedicated goose guns are chambered for it.

The counter-case is that the guns which are 3-inch only are often the guns that fit best or cost least, and a gun that fits you and that you shoot without flinching kills more geese than a chamber you never use. If your budget puts a 3 1/2-inch semi-auto out of reach, a 3-inch gun plus a better decoy spread is the better purchase. That is not a consolation prize: it is the correct order of priorities.

When the 3.5 earns its place

Buy and shoot 3 1/2-inch shells if: you hunt geese in big fields where birds routinely finish at 35 to 45 yards; you pass-shoot; you hunt late-season Canadas that circle out of range and come back high; or you are shooting plain steel and want the most pellets you can put in one pattern.

Stay with 3-inch if: your geese finish inside 35 yards over decoys; you shoot enough shells in a morning that recoil fatigue is a factor; you want access to every premium load on the market, including the tungsten blends that are 3-inch only; or your gun is 3-inch chambered and otherwise right for you.

Either way, the thing that closes the range gap fastest is not the shell. It is the spread, the hide and the calling — see how to build a goose decoy spread, how many goose decoys you need and how to blow a short reed goose call. A flock that finishes at 25 yards makes this entire argument irrelevant, which is the most useful thing on this page.