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Clark · April 18, 2011, 01:50 AM

Some old straight wall cartridges get made a little longer and get registered at a higher pressure.
They made a mistake with the 32 H&R mag, in that it failed to take advantage of how high the pressure could be and still not get stuck cases. To exploit that margin, the case had to be lengthened and the pressure upped a second time to the 327 Fed Mag.
Revolvers with a 6 at once extractor can get stuck cases at ~~ 40,000 psi, depending on the thickness of the steel chamber wall:
http://groups.google.com/group/rec.g...02ce69fa01e631

38 special [17kpsi]-> 357 mag [35kpsi]
44 special [15.5kpsi]-> 44 mag [36kpsi]
45 Colt [14kpsi]-> 454 Casull [65kpsi]
32 S&W long [15kpsi]-> 32 H&R mag [21kcup] -> 327 Fed Mag [45kpsi]

What does it all mean?
Nothing went wrong with the 327F.
What went wrong was the 32 H&R wimpiness that caused the 327F to be created to fix it.

April 18, 2011, 01:50 AM	#99
Clark Senior Member Join Date: December 4, 1999 Location: WA, the ever blue state Posts: 4,678	Some old straight wall cartridges get made a little longer and get registered at a higher pressure. They made a mistake with the 32 H&R mag, in that it failed to take advantage of how high the pressure could be and still not get stuck cases. To exploit that margin, the case had to be lengthened and the pressure upped a second time to the 327 Fed Mag. Revolvers with a 6 at once extractor can get stuck cases at ~~ 40,000 psi, depending on the thickness of the steel chamber wall: http://groups.google.com/group/rec.g...02ce69fa01e631 38 special [17kpsi]-> 357 mag [35kpsi] 44 special [15.5kpsi]-> 44 mag [36kpsi] 45 Colt [14kpsi]-> 454 Casull [65kpsi] 32 S&W long [15kpsi]-> 32 H&R mag [21kcup] -> 327 Fed Mag [45kpsi] What does it all mean? Nothing went wrong with the 327F. What went wrong was the 32 H&R wimpiness that caused the 327F to be created to fix it. __________________ The word 'forum" does not mean "not criticizing books." "Ad hominem fallacy" is not the same as point by point criticism of books. If you bought the book, and believe it all, it may FEEL like an ad hominem attack, but you might strive to accept other points of view may exist. Are we a nation of competing ideas, or a nation of forced conformity of thought?