ftermarket choke tubes look cool, but will they help you bag more waterfowl? Choke makers tout better patterns from their wares, and some claim shorter shot strings and lower recoil, too. Skeptics say a flush factory Modified is all you need. Recently, Federal’s shotshell engineers helped me scientifically test four tubes of identical internal diameter to see where the truth lies. Our test subjects were a flush factory Remington Probore (REM‑NP), a Kick’s Vortex non-ported choke (KV-NP), a Kick’s High Flyer ported tube (KHF-P), and a ported Patternmaster (P‑P) wad-stripping choke. Before you plunk down $80 to $100 for an aftermarket model, here’s what we learned. Patterning The main reason to buy an extended choke is the promise of improved patterns. Aftermarket makers use the choke’s internal geometry to stabilize payloads, or they employ studs or ports to promote cleaner separation of the shot from the shotcup. Protocol At an underground range, using a Reminton Versa Max, we shot patterns at 40 yards through the four chokes, using 3-inch, 12-gauge, 11⁄8-ounce, 1550-fps Federal Speed-Shok “Blue Box” loads of 2s and BBBs. For both sizes, we fired 20 shots through each tube and calculated the percentage of pellets within a 30-inch circle. Results 40 YD. / NO. 2 40 YD. / BBB P-P 73.5% 83.9% KHF-P 72.70% 78.84% REM-NP 65.25% 79.64% KV-NP 65.17% 78.08% Conclusion Worth it, especially with smaller shot sizes. The ported tubes showed a 7 to 8 percent pattern advantage with No. 2 shot. The BBB patterned well from every choke, but the Patternmaster shot it noticeably better than the others.