Have no experience with steel shot. Does one need chrome lined barrel for steel shot? Is there any certain need for shooting steel shot?
I'm wondering if it would be safe to use Steel Shot in my 1959 Ithaca Model 37 Featherlight 12 ga. ??? It's choked modified.
From what I've read, by the early 1980's steel walls in shotgun barrels on most mass production guns were made thicker for steel shot. Of course high end O/U and SxS were not made that way unless the maker states so. I shoot Japanese Brownings with steel (IMP and MOD choked only) and steel in a 1974 Winchester SXM1 MOD barrel, but never in my Belgian Browning's or Pre-64 Winchester's. It can be frustrating to research; as an example, currently Browning only states steel is okay in Invector barrels, but prior to Invector being introduced they stated that fixed choke Japanese made Auto-5 barrels were okay with steel. You might want to call Ithaca and see what they say about an old M37.
I shoot steel with my '47 model 12 Trap gun all the time using Mod or IM. Absolutely no problems in 20 yrs, and we shoot LOTS every season. Go fill your boots.