I'll 2nd the use of steel on carolina rigs or catfish weights. Steel is better on environment than lead and is cheaper than tungsten, so if there is a chance I'm gonna be loosing and replacing them, I'll go with cheaper. Got my butt kicked once by a guy using ultra steel weights on a C-rig from back of boat. It was probably just because he was a better fisherman than me.

One thing that Steel doesn;t have over lead is the protection of the line from abrasion.So if not machined perfectly with rolled edge. The steel can create rough spots or sharp spots if not machined properly and don't give at all, where lead will not have as much as a blade edge when it comes to abrading or cutting line.