Carlson's Winchester Bismuth Bone Buster Choke Tubes

Carlson's Bismuth Bone Buster choke tubes are designed to work specifically with Bismuth ammunition. These choke tubes will fit most Winchester, Browning Invector, Mossberg Model 500, Weatherby, and Savage Shotguns. The Mid and Extended Range choke tubes will produce a dense pattern and can be used with all lead and Hevi-Shot loads.

Note: For Winchester SX2, SX3, SX4, SXP, New Supreme & 101 models use Browning Invector Plus choke tubes.

Carlson's Winchester Bismuth Bone Buster Choke Tubes Features 

• Fits most Winchester, Browning Invector, Mossberg Model 500, Weatherby, and Savage Shotguns
• Designed for excellent, dense patterns with Bismuth ammo
• Made from 17-4 heat-treated stainless steel
• Longer parallel section (inside the choke) over conventional factory choke tubes
• 12 gauge available in Mid Range (.025 constriction( and Extended Range (.040 constriction)
• 20 gauge available in Mid Range (.025 constriction( and Extended Range (.040 constriction)
• Mid Range can be used with all steel shot
• Extended Range can be used with steel shot no larger than #2

Constriction	12 ga Dia.	20 ga Dia.
Mid Range	.705	.595
Extended Range	.690	.585