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Cup pressure of big boy classic

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CT_Shooter
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Re: Cup pressure of big boy classic

Post by CT_Shooter » Mon Mar 05, 2018 7:06 pm

Mistered wrote:
it seems to me if the brass case can handle the load, the rifle ought to handle it as well. Please set me straight.
Consider yourself set straight! This is not correct! The case is considerably thinner than the receiver and is contained within the chamber so it is 'supported' . This is why guns with less than 100% case support (Glock for one) eject semi bulged cases. Conversely if a firing pin were to slam fire prior to the case being completely chambered (some ARs have been knows to do this) it will burst in the receiver. The case is in no way a benchmark for how much the gun can 'handle'!
Thanks for that explanation. And I only want to understand it a bit better. So, if a brass case were to burst in the receiver as with ARs or eject semi-bulged as with Glocks, then that would be a load that the receiver should not be subjected to.... No?
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tractortad
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Re: Cup pressure of big boy classic

Post by tractortad » Mon Mar 05, 2018 7:14 pm

Mistered wrote:
it seems to me if the brass case can handle the load, the rifle ought to handle it as well. Please set me straight.
Consider yourself set straight! This is not correct! The case is considerably thinner than the receiver and is contained within the chamber so it is 'supported' . This is why guns with less than 100% case support (Glock for one) eject semi bulged cases. Conversely if a firing pin were to slam fire prior to the case being completely chambered (some ARs have been knows to do this) it will burst in the receiver. The case is in no way a benchmark for how much the gun can 'handle'!
Actually in the case of 45LC, CT Shooter kind of has this right. The weak link in reloading 45LC usually is the case. That's why most reloading manuals don't recommend loading it to 44MAg pressures - because the original 45LC was never designed to withstand those pressures. I think Buffalo Bore uses some thicker walled cases to make their 45LC hot loads...
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RanchRoper
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Re: Cup pressure of big boy classic

Post by RanchRoper » Mon Mar 05, 2018 9:25 pm

Like they used to say in Hill Street Blues..."Let's be careful out there!"
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