Weatherby produces or has produced shotguns with the IMC, Mobil, and Crio choke thread patterns, and the models that use each pattern are listed below.

IMC (Integral Multi Choke)

SA-08 (12 & 20 gauges only)
PA-08 (all)
SA-459 Turkey Xtra Green
Orion
Element (12 & 20 gauges only)

The IMC choke tube thread pattern is compatible with the following choke tube patterns: Browning Invector (not Plus), Mossberg Accu-Choke and Win-Choke.

Beretta/Benelli Mobil Choke

PA-459 (all)
SA-459 (except Turkey Xtra Green)
SA-459 Turkey Mothwing Spring Mimicry (Discontinued Model)
SA-08 (28 Gauge only)

Crio

18i (all)

Suggested aftermarket choke tube manufacturers:

Trulock

Carlson’s

Briley Manufacturing

Slugs

Weatherby recommends slugs only be fired using a non-ported cylinder choke. Refer to our FAQ on the use of slugs in your Weatherby shotgun.