CHOKE TUBE GUIDE
Choke Tube Identification
Choke tubes can be identified by the number and placement of small notches found on their muzzle (non- threaded) ends.
O |
Extra Full |
I |
Full |
II |
Improved Modified |
III |
Modified |
IIII |
Improved Cylinder |
IIIII |
Skeet |
IIIIII |
Cylinder |
I-I |
SC-I |
II-II |
SC-II |
The Use of Slugs |
Smooth bore barrels with choke tubes should have “Cylinder Choke” tubes installed when using Foster or Bernneke style rifled slugs. A “Cylinder Choke” will provide the best accuracy. Any choke with constriction of .020″ or more can result in damage to the barrel. Our “Improved Choke” tubes have a constriction of .013″ and therefore may be used with rifled slugs; however, accuracy may be compromised. Weatherby recommends slugs only be fired using a non-ported cylinder choke. |
At no time should you shoot without a choke tube installed as this may cause damage to the choke tube threads in the barrel. |