Falconflyer
CGN Ultra frequent flyer
This is interesting, I have a 50's vintage Browning Lightning that was opened up to IC and a Browning BSS IC and Mod. I emailed Browning direct and they said do not shoot steel through either of them. I would love to hear what guntech has to say about that!
From Browning's website,
3. DO NO USE ANY STEEL SHOT LOADS:
The Belgian-made A-5, Superposed, Leige, and other Belgian Over/Under models, Double Automatic, American-made A-5 and all other models not listed in category 1 or 2.
I think this is more a liability issue more than anything and I don't see why steel couldn't be put through any of these guns if they had open chokes. Perhaps there are legitimate reasons but Browning doesn't disclose them.