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Old 07-04-2015, 07:05 PM
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Semisane
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How did you arrive at that 1400 fps ceiling T7?

This is what the Sierra web site says about the .4295 240 grain JHC.

.44 CALIBER (.4295) 240 GR. JHC
Designed for the hunter requiring accuracy, penetration and dependable expansion from a 44 Remington Magnum revolver, Sierra introduced the 240 grain #8610 Jacketed Hollow Cavity SportsMaster bullets in 1970. These bullets were upgraded with Sierra's PowerJacket in 1982. The dependable Jacketed Hollow Cavity and PowerJacket design makes these bullets extremely versatile. They are true magnum bullets, featuring a heavy jacket and 1 1/2% antimony core, yet they will expand reliably at 44 Special velocities. These bullets are extremely effective on up to deer-size game. The 240 grain #8610 bullets are intended for larger, more tenacious game, but also are effective for deer-size game. These bullets may also be used in another "old timer," the venerable 44-40 Winchester (44 WCF) cartridge in western-style single-action revolvers and rifles now popular for Cowboy Shooting. Because these bullets have flat noses and cannelures, they may be roll-crimped for use in revolvers and all rifles with tubular magazines.
That .4295 diameter might be just the ticket for those who have a hard time getting a tight fit with .429 bullets.
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