Turkey choke vs duck choke: why one barrel needs both tubes

The short verdict

We have not shot a pattern with either tube. This page compares only what the makers publish — constriction, exit diameter, rated shot types, porting, material and warranty — against the choke rubric in our published scoring method. If the word constriction is new, read what choke for turkey hunting first, or start at the guns and loads hub.

Side by side, on published numbers only

All three tubes thread into the same Winchester / Browning Invector / Mossberg 500 barrel. Every value links to the page it came from, and a dash means the maker does not publish it.

Two completely different targets

Every choke decision starts with the target, and these two targets have nothing in common.

• A gobbler is still, and small. You are aiming at the head and neck — the NWTF puts the killing area at roughly 4 square inches — and the yardstick is a count of pellets inside a 10 in circle at 40 yards. Mississippi State University Extension sets the bar at 100 holes in a 10 in circle at 40 yards. Tight is the whole point.
• A duck is moving, and you are swinging. Your pattern has to be wide enough to forgive the lead you guessed wrong, and dense enough to break a wing bone. Too tight and you miss cleanly; slightly too open and you still connect.

Those two requirements pull the exit diameter in opposite directions. No single tube satisfies both, which is why Carlson's sells the turkey lines and the Cremator waterfowl line as separate products for the same barrel.

The constriction gap, in one maker's numbers

Carlson's publishes a constriction ladder on its choke tube information page: Modified .020 in, Improved Modified .025 in, Full .030 in, Extra Full .040 in, Turkey .045 in or more. Then in the Winchester / Browning Invector / Mossberg 500 thread it publishes actual exit diameters, and the gap becomes concrete.

Read the ends of that table against each other. The most closed waterfowl tube Carlson's sells for this gun is 0.705 in. The tightest turkey tube is 0.640 in. That is 0.065 in, and it is the difference between a pattern designed to sweep a moving bird and one designed to sit inside a dinner plate at 40 yards.

The steel shot problem, which is the part people miss

Constriction is only half the reason these tubes are not interchangeable. The other half is what is legally and mechanically allowed through them.

Waterfowl hunting in the United States is a non-toxic shot game, so duck tubes are built around steel: Carlson's describes the Cremator's Triple Shot Technology as “a series of three graduated rings in the taper section” that give “reduced pellet deformation, less flyers and more dense patterns.” Steel does not squash the way lead does, so a waterfowl tube's internal geometry is about easing hard pellets through a constriction without wrecking the pattern or the tube.

Turkey tubes carry the opposite warning. Carlson's prints it on every turkey product page: “Do Not Use Any Steel Shot Larger Than #4, Slugs, Sabots, Rifled Slugs, or 00/000 Buckshot Through a Carlson's Turkey Choke.” Primos says its turkey tubes are “not designed to shoot steel shot.” Most duck loads are steel #2, #3, BB or bigger, and all of those are outside what a turkey tube is rated to pass.

Ports, rings and what each design is actually solving

Both of these tubes are ported, and the ports are doing similar work for different reasons. Kick's builds the Gobblin' Thunder with a diagonally ported extended body specifically for recoil reduction, because a turkey load is a heavy payload fired from a seated position with your cheek jammed into the stock. Carlson's ports the Cremator to “reduce recoil and muzzle rise,” which matters when there is a second and third bird behind the first one.

The internal geometry is where they diverge. Kick's publishes a conical/parallel internal design and a claim it “dependably delivers a 14-16 in pattern at 40 yards” — a tight-pattern claim. Carlson's publishes graduated taper rings aimed at pellet deformation — a pellet-integrity claim. Those are two different engineering problems, and the tubes reflect it.

Can you shoot turkeys with a duck choke?

Inside very close range, with the right shells, you would probably kill a turkey with a Cremator Long Range tube. It is a bad plan for two reasons that have nothing to do with opinion.

First, at 0.705 in it is more open than every turkey tube Carlson's sells for that gun, including the modest flush Turkey tube at 0.680 in. Second, if your duck tube is in the barrel, your duck shells are probably in the bag, and steel #2 or BB through a tight tube is exactly what every maker warns against. If the turkey tube is what you are missing, our best turkey chokes roundup is the shortest route to the right one.

And ducks with a turkey choke?

No, and this is the direction that damages things. A turkey constriction is not rated to pass steel shot larger than #4. Most duck and goose loads are larger than #4 steel. That is a barrel-and-tube problem, not a pattern problem, and it is the one mistake on this page that costs money rather than a bird.

There is also nothing to gain. A turkey tube at 0.640 in throwing a 14 in pattern at 40 yards gives you almost no margin on a crossing bird.

If you are only going to own one tube

Own the Full choke. Carlson's rates its flush replacement line “Steel, Lead, & Hevi-Shot may be used in all constrictions,” with the limit that no steel larger than #BB or faster than 1550 fps goes through anything tighter than Full. At $27.50 on Carlson's store, read 2026-09-28, it is a third the price of either specialist tube and it is the honest all-rounder: adequate on decoying ducks, adequate on a close turkey, best at neither.

Then be honest about your range. Our comparison of turkey choke vs full choke works through what a Full tube actually costs you on a gobbler at 40 yards, and how far you can shoot a turkey covers the range claims worth believing.

Swapping tubes between seasons without ruining anything

The practical routine is short and the same for both tubes. Wipe the barrel threads and the tube threads clean. Start the tube by hand and let it turn smoothly — Indian Creek's instruction is blunt: “When installing chokes, make sure threads screw-in smoothly and that the choke is completely seated in the barrel,” because a tube that is not seated can damage the barrel, the choke or both. Extended tubes are hand-tight: Primos says “grip the knurled end and hand-tighten only. No tools needed. DO NOT OVER TIGHTEN.”

Two habits worth building. Keep the turkey tube and the turkey shells in the same pocket of the vest, so the tube and the shot type never get separated. And re-pattern after every swap: a change of tube usually moves your point of impact, which is the whole reason for patterning the gun before the season rather than the night before.