Primer: How To Measure a Group

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Re: Primer: How To Measure a Group XL5 #6475713 05/05/12
Joined: Sep 2006 Posts: 18,005 Gone To Texas D DocRocket OP Campfire Ranger
OP DocRocket Campfire Ranger D Joined: Sep 2006 Posts: 18,005 Gone To Texas	Originally Posted by XL5 XL5... WOW!!! Thanks for posting this! The bottom group in your photo, above, is one that is familiar to me (and, I suspect, most reloaders who shoot a lot of "test" groups). You look at that nice tight group on the right, and then you have to explain the "flyer" way out there in left field... was it a gust of wind? a flinch? or does my new rifle shoot flyers with unpredictable regularity? If the latter, you don't want to hunt with that rifle! I recall reading an explanation for using 3-shot groups years ago and sort of understood it, so I've done 3-shot groups ever since when sighting-in a scope or when doing load development. But it didn't make sense to me as much as your explanation does. Thanks again. I have been intimidated by Excel for years. Now I have a reason for overcoming my fears.... FWIW, I posted the OP not as a statistics lesson, but simply to illustrate the way groups are measured for competition purposes. Last edited by DocRocket; 05/05/12. "I'm gonna have to science the schit out of this." Mark Watney, Sol 59, Mars

GB1

Entire Thread
Title	Posted By	Posted
Primer: How To Measure a Group	DocRocket	05/05/12
Re: Primer: How To Measure a Group	roundoak	05/05/12
Re: Primer: How To Measure a Group	Rancho_Loco	05/05/12
Re: Primer: How To Measure a Group	Bluedreaux	05/05/12
Re: Primer: How To Measure a Group	Cheyenne	05/05/12
Re: Primer: How To Measure a Group	Bluedreaux	05/05/12
Re: Primer: How To Measure a Group	Vic_in_Va	05/05/12
Re: Primer: How To Measure a Group	RockyRaab	05/05/12
Re: Primer: How To Measure a Group	XL5	05/05/12
Re: Primer: How To Measure a Group	DocRocket	05/05/12
Re: Primer: How To Measure a Group	Rancho_Loco	05/05/12
Re: Primer: How To Measure a Group	tjm10025	05/05/12
Re: Primer: How To Measure a Group	Clarkm	05/06/12
Re: Primer: How To Measure a Group	DocRocket	05/06/12
Re: Primer: How To Measure a Group	deflave	05/06/12
Re: Primer: How To Measure a Group	DocRocket	05/06/12
Re: Primer: How To Measure a Group	XL5	05/29/12
Re: Primer: How To Measure a Group	Mannlicher	05/29/12
Re: Primer: How To Measure a Group	RockyRaab	05/29/12
Re: Primer: How To Measure a Group	tex_n_cal	05/29/12
Re: Primer: How To Measure a Group	tjm10025	05/29/12
Re: Primer: How To Measure a Group	MontanaMan	05/29/12
Re: Primer: How To Measure a Group	XL5	05/29/12
Re: Primer: How To Measure a Group	Eremicus	05/29/12
Re: Primer: How To Measure a Group	RockyRaab	05/30/12
Re: Primer: How To Measure a Group	JOG	05/30/12
Re: Primer: How To Measure a Group	bwinters	05/31/12
Re: Primer: How To Measure a Group	McInnis	05/31/12
Re: Primer: How To Measure a Group	JBGQUICK	05/31/12
Re: Primer: How To Measure a Group	Robert_Wilson	06/01/12
Re: Primer: How To Measure a Group	ColsPaul	06/01/12

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