RCBS Trim Die for 450 Nitro Express

You are considering a vintage RCBS Trim Die for 450 Nitro Express. The die doubles as a visual queue to check if your cartridge case is too long — if it sticks out the top, it’s too long. The Trim Die is heat-treated to withstand a file skimming the top of the die without damage, it’s hand polished and case hardened.