By the 14th century, lead was becoming a common metal with which to cast bullets ... of a lightweight .45 ACP bullet used in bullseye shooting. C. The Elmer Keith design uses a wider front ...

357 Mag. Powder-coating also adds 0.002" to bullet diameter. Even hard-cast bullets are elastic, and bullets a few thousands of an inch over bore diameter do not raise pressures. The only limit is ...