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Old February 22, 2002, 09:05 PM   #1
Join Date: November 26, 2000
Posts: 97
Lyman Cast Bullet Handbook third edition question

In the pistol load data section some of the powders are prefixed with **. The footnote says "Designates special pressure test barrel". The starting and max. grains don't seem to be out of line and I just wondered if is supposed to be a warning or something I should be concerned about. Anyway, what does it mean?

Thanks in advance.
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Old February 22, 2002, 10:14 PM   #2
Steve Smith
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Join Date: December 9, 1999
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While many loads are tested in real guns, some are tested with a test barrel, which is just a barrel bolted to a block of steel, which is bolted or clamped to a bench. The pressure barrel will have a pressure measuring device, such as a copper crusher, to determine actual pressure of the load.

A pressure barrel will not simulate your gun in any way, so you should do as always, back off 10% and decide what do do from that.
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