ORIGINAL: bigbulls
The older shotgun barrels were not designed to fire steel shot because they had no regulations mandating the use of non toxic shot back then.
Steel has no give to it like lead does and puts far greater stress on the choke of your barrel. You can end up splitting the end of your barrel if you fire steel through it.
Steel shot was not in production,nor were there any regs on it for it wasn,t even invented yet! it was only produced for the regs that came down the line. If one does as trailer stated and have the forcing cone recut and open your choke to Mod or put a choke system in it,for the amount of shells that will be shot it won,t hurt anything if your older gun is in good conditioin and inspected by a reputable gunsmith. vangunsmith