You can take one extreme view or the other. Load lead and have fun or shoot nothing but premium jacketed factory ammo. Either one is sure to cost a lot of money.
NO LEAD in factory Glock barrels. That is pretty simple.
I have several Lone Wolf barrels that get the lead bullets.
If you are afraid of shooting handloads through a gun then don't. Properly assembled handloads are no more dangerous than factory ammo.
IMHO, there is no reason a polygon rifled barrel is a no-no for lead. The rifling should collect LESS lead than a traditionally rifled barrel. HK pistols have not been blowing up from lead and they use similar rifling. I believe there is something in the throat that is actually causing the problem. Someone should come up with a reamer to extend the throat and see what happens.
In life, strive to take the high road....It offers a better field of fire.
"Robo is right" Fuzzball