question on steel shot

[charlie cleveland]

dennis i know most steel shot is harder than some barrels that are made of softer steel but how can the steel harm the barrel if it is in a good plastic wadding...the steel should never touch steel if enclosed in a good wadding...i know that you might harm a full choke gun but a modified or lesser choke should be fine in my way of thinking..ive checked steel wadding after they had been fired i seen no damage to the wad so if no damage to wad how can there be damage to the steel barrel if shot through a open choke gun regardless of steel the barrel is made of... i also have shot steel balls through some old guns it is good we learn from our experiances in life... charlie