How to Pattern a Shotgun: Step-by-Step

Every fall, shotgunners learn the same lesson the hard way: the gun that felt perfect in the store throws its pellets somewhere other than where they are looking. Patterning is the process of proving where a specific load and choke actually hits, and it takes one afternoon and a stack of paper.

Duck season is opening across the flyways and fall turkey seasons are already underway in several states, which makes right now the best window of the year to put your gun on paper. Here is the step-by-step process for both waterfowl and turkey, and what to do when the pattern is not where you want it.

What You Need

• Your shotgun, with every choke tube you might hunt with
• Two or three boxes of the exact load you plan to hunt, plus one lighter option for comparison
• Large paper or cardboard targets — 48 by 48 inches is a good working size
• A staple gun or tape, a permanent marker, a tape measure and a seat or shooting bench
• Eye and ear protection, and a way to count pellets (a pen works fine)

For waterfowl, use the non-toxic load you will actually carry. For turkey, use your dedicated turkey load. Testing a load you will never hunt is a waste of shells.

Set Up at a Realistic Distance

Patterning at the wrong distance is the most common mistake. Waterfowl hunters should zero in on 30 to 40 yards, since that covers the majority of kill shots over decoys and in the field. Turkey hunters should pattern at 40 yards as the primary standard, then run a second target at 50 yards if your choke is designed for longer work.

Fire from a realistic position. Turkey hunters typically sit with a knee rest; waterfowlers often shoot from a seated or low position in a blind. Do not sandbag the gun into a bench rest and call the result final — recoil management changes point of impact, and a gun that shoots true off bags can throw high when you are hunched behind it in a blind.

Pick an aim point and mark it every time. Consistency is everything here: same distance, same hold, same point of aim, so that any shift in the pattern is the gun and load, not you.

Read the Pattern Correctly

Once you have fired, find the densest cluster of pellets and draw a 30-inch circle centered on it — not centered on where you aimed. That circle is the working pattern, and the difference between its center and your point of aim is your point-of-impact error.

Then count. The widely used standard among waterfowlers is pellet counts and percentages inside that 30-inch circle at 40 yards. Patterns that keep roughly 90 to 100 pellets inside the circle are generally considered enough for reliable hits on large ducks, and a great many hunters simply aim for the highest percentage of pellets they can get inside the circle at their maximum ethical range.

Two more things to check while the paper is still up. First, look for holes — thin spots or voids in the middle of the pattern that a bird can fly through, even when the overall percentage looks good. Second, check the edges. Turkey hunters want a pattern dense enough to put several pellets in the head and neck at range, while duck hunters often prefer a slightly more forgiving spread that covers for a bird that moves at the shot.

Adjusting Choke and Load

If your gun shoots high, low or to one side, do not accept it. Shoot the same load through a tighter and looser choke and compare. Choke constriction changes both the size and the density of the pattern: a tighter choke holds the shot together longer and keeps more pellets in the circle at distance, while an open choke spreads faster and is more forgiving up close.

Load choice matters just as much. Steel loses energy faster than heavier non-toxic alternatives, so steel patterns loosen quicker at distance — which is why shooting paper at both 35 and 45 yards tells you more than a single target at 40. If you want the full breakdown of shot sizes and load selection by species, our steel shot guide covers it.

If a load shoots consistently off target regardless of choke, the fix is usually a stock adjustment or a different load, not more choke. A shotgun that patterns 6 inches left at 40 yards will miss birds all season, and no amount of practice will overcome it.

Turkey-Specific Notes

Turkey hunters should pattern with the same sitting posture they will use in the field, since recoil and cheek weld differ completely from a standing shot. Test at 40 yards, then again at 50 if your setup is built for it, and count pellets in the head-and-neck area rather than the whole circle. A pattern that puts a dozen pellets in the vitals area but nothing in the head should be treated as a range limitation, not a challenge.

Do not assume a new choke will pattern the same as the old one. Choke and load combinations are individual; two identical guns can prefer different loads. That is exactly why this process is worth an afternoon — the same discipline that makes sighting in a rifle before deer season essential applies to your shotgun before opening day.

Run the paper once, log what you find, and recheck before each season. Guns get dropped, chokes get swapped, and loads get reformulated. A gun that is proven on paper is one less variable when a flock locks up over the decoys.