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Rangefinder · April 21, 2012, 01:18 PM

Lead threshold is NOT about velocity--it's about pressure versus lead resilience depending on your alloy. The biggest key in lead is the FIT. Depending on how the pressures are for a particular cartridge, you CAN push lead as fast and hard as a typical jacketed bullet if all things are put together properly. My .40S&W drives a cast lead bullet upwards of 1050fps on 165gr HP's with no trouble at all so long as I've put everything together right on my end. My .357 goes over 1300+fps with 158gr SWC's and runs very clean.

April 21, 2012, 01:18 PM	#8
Rangefinder Senior Member Join Date: August 4, 2005 Posts: 2,017	Lead threshold is NOT about velocity--it's about pressure versus lead resilience depending on your alloy. The biggest key in lead is the FIT. Depending on how the pressures are for a particular cartridge, you CAN push lead as fast and hard as a typical jacketed bullet if all things are put together properly. My .40S&W drives a cast lead bullet upwards of 1050fps on 165gr HP's with no trouble at all so long as I've put everything together right on my end. My .357 goes over 1300+fps with 158gr SWC's and runs very clean. __________________ "Why is is called Common Sense when it seems so few actually possess it?" Guns only have two enemies: Rust and Politicians.