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Double Rifles, Single Shots & Combinations >> Double Rifles

KWK
.275 member

Reged: 28/02/04
Posts: 61
Loc: Illinois

Re: TPI, CPU, PSI
03/04/05 11:21 AM

That may depend on whether the fudge factor is a simple constant or some non-linear function derived from experimental data. It would be fun to talk for an hour with the technical director at SAAMI to learn about how things such as pressure rise rates, breadth of the pressure peak, etc. affect the error in CUP. I can't prove it, but I have a hunch that a corrected tarage table (one based on comparisons to piezo data) could get you to within 15% of true. Unfortunately, I also suspect the correction could vary with things like SD and relative case volume.

With the advent of cheap stain gauge rigs for handloaders, the whole issue seems to be moot, even if it is interesting.

Post Extras

Entire topic
Subject	Posted by	Posted on
TPI, CPU, PSI	AussieMike	22/03/05 05:57 PM
Re: TPI, CPU, PSI	KWK	25/03/05 12:16 AM
Re: TPI, CPU, PSI	unspellable	31/03/05 09:50 AM
Re: TPI, CPU, PSI	KWK	01/04/05 07:09 PM
Re: TPI, CPU, PSI	unspellable	03/04/05 03:22 AM
Re: TPI, CPU, PSI	KWK	03/04/05 11:21 AM
Re: TPI, CPU, PSI	AussieMike	04/04/05 06:15 PM
Re: TPI, CPU, PSI	KWK	05/04/05 12:06 AM
Re: TPI, CPU, PSI	unspellable	05/04/05 03:40 AM
Re: TPI, CPU, PSI	KWK	05/04/05 11:54 AM
Re: TPI, CPU, PSI	unspellable	05/04/05 10:46 PM
Re: TPI, CPU, PSI	KWK	31/03/05 10:44 PM
Re: TPI, CPU, PSI	unspellable	31/03/05 11:28 PM
Re: TPI, CPU, PSI	Tom_Bigbore	22/03/05 10:27 PM

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