These choke tubes will only fit 12 gauge shotguns with the Mobilchoke system.
Can I use Steel Shot with my Beretta Choke Tubes?
We suggest that – when using Steel Shot – you only use choke tubes marked with the SP (Steel Proof) identification on the side and that you use the most open choke system possible – i.e. Cylinder / Improved Cylinder / or Modified. We DO NOT recommend use of Steel Shot in the X-Tra Full Turkey / Full / or Improved Modified choke tube. As with any shotgun, always be sure to check your choke tubes during use to verify that they are tight in the barrel. Loose choke tubes can cause barrel damage.