Patternmaster Tech

Cut Shell Technology

How our internal geometry strips the wad, shortens shot string, and delivers denser, more lethal patterns.

The idea behind Cut Shell Technology

Inside every Patternmaster choke is a precisely machined cut-ring geometry that grabs the wad for a split second. By interrupting the wad’s forward motion while letting the shot charge continue, we strip the wad away, dramatically shorten the shot string, and keep pellets flying as a tight, even swarm.

  • Wad control—not extreme constriction—creates our pattern density.
  • Shorter shot string = more pellets on target at one time.
  • Consistent POI across popular loads and gauges.
Cut shell internal geometry diagram

Step-by-step

  1. Enter: Shot and wad enter the choke as a single unit.
  2. Engage: Internal cut rings momentarily control the wad’s skirt.
  3. Separate: Shot outruns the wad with less deformation.
  4. Deliver: A shorter, denser shot string for cleaner hits.
Wad stripping sequence

Tighter patterns

Dense, even cores with fewer flyers—especially with modern steel and tungsten.

Shorter shot string

More pellets arrive together—impacts feel heavier at hunting distances.

Load flexibility

Performs consistently with lead, steel, bismuth, and tungsten.

How it compares to traditional constriction

FeatureCut Shell (wad control)Traditional (tight constriction)
Pattern methodWad stripping & shot decouplingSqueezes shot column
Pellet deformationLowHigher (esp. with hard steel)
Shot string lengthShortLonger
Load toleranceExcellent across lead/steel/tungstenVaries by payload hardness
ConsistencyHigh across weather & gunsCan be finicky by barrel
Use the Choke Finder Shop Choke Families

Ammo compatibility

  • Lead & Bismuth: Fully supported.
  • Steel: Designed for high-velocity steel loads.
  • Tungsten: Excellent core density with fewer flyers.
  • Specialty wads: Follow ammunition manufacturer guidance.
Shotshell lineup

Frequently asked questions