The Signature Series of Winchester Invector Plus choke tubes are made to bring out the performance of your shotgun. The extended length, combined with perfected choke tapers create a consistent, reliable, uniform pattern at each constriction. Signature Series tubes are available in full range of constrictions for optimizing your pattern for the game or target you are shooting. These choke tubes are 12 Gauge only for current and past Winchester shotguns: Model 101, Supreme, Select, SX2, SX3, SX4 and SXP shotguns.
A few details.The proven Invector-Plus interchangeable choke tube system works hand-in-hand with back-boring to offer consistent, dense shot patterns with the ideal tube constriction needed for the shooting situation. The longer choke taper inside an Invector-Plus choke tube produces consistent patterns with more uniform densities and fewer fliers. The superior design of the Invector-Plus system is far more durable than the choke systems found in our competitors’ guns, especially when shooting steel shot. Invector-Plus eliminates gases slipping between the choke tube and barrel that could damage the choke tube and the barrel.
Average Pattern Percentages
Measured using the number of pellets in a 30" circle at 30 yards. Varies with shot size and/or lead vs. steel shot. Steel patterns generally exhibit a higher percentage of pellets inside the circle.
IMPORTANT:The following values are approximate. They vary between gauges and the type, length and design of the choke tube.
75-85% – Extra Full Trap 55-85% – Full 70-75% – Light Full 45-75% – Improved Modified 35-65% – Modified 30-60% – Light Modified 25-55% – Improved Cylinder 20-45% – Skeet 15-45% – Cylinder Very open – Spreader
