Quenching or not is NOT the answer in itself. The key is to match bullet hardness with chamber pressure. You need to have the bullet base obturate adequately to prevent leading. Lower pressures, softer lead. Higher pressures, harder lead. I shoot a half dozen different rifle and pistol calibers and quench none of them. All my loads are mild though for paper punching and get no leading at all. All my 9MM's gave me problems with leading until I stopped quenching. If yoou want to drive rifle bullets a higher velocities you will have to use harder lead.

__________________
Lost in Penn's Woods