I have been loading since the 80's with lead
The thing is that if you keep the volocites that are listed in all the books for lead loads for the gun that your shooting lead is not a problem. Yes you will get a little at the start of the lands but its a non issue thing.
Some people in other threads are talking about 1500 fps with lead bullets in 357 mag and thats just not a safe load and loading manual dont show those loads.
Just becouse your shooting a 158 gr lead bullet and its the same weight as a jacketed bullet does not mean you can push it as hard.
Lead is ment for cheep plinking, and if you use it that way there are no worries but lots of fun