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Re: I read it in a magazine... Jim Legg #185856 04/14/10 06:45 PM
Joined: Jan 2002 Posts: 871 Likes: 3 Dover-Foxcroft, ME Samuel_Hoggson Sidelock
Samuel_Hoggson Sidelock Joined: Jan 2002 Posts: 871 Likes: 3 Dover-Foxcroft, ME	I read the G&A test. It involved about 5 shooters and, IIRC, only about 10 shots per shooter. Ie., it had zero statistical significance. The more subtle an anticipated difference, the greater is the required sample size. I like to read G&A sometimes, but........ The problem is even worse than that because experiments involving human subjects have hurdles not encountered in physics lab. One simple illustration: how would we rule out the possiblity of a bimodal distribution, ie., that some human subjects genuinely discriminate faster burn rate as "greater recoil", while other subjects genuinely draw the exact opposite conclusion. On to formulas. The formula for recoil energy does not include terms for pressure. So, obviously, powder burn rate doesn't affect calculated recoil energy, except inasmuch as slower powders increase ejecta mass. The problem is the presumption that the perception of recoil by humans is best modeled as an energy. Does the area under the force/time curve come closest to telling 100% of the story, insofar as recoil perception is concerned? Oddly, nothing I have ever read has so much as addressed - let alone established - this. Invariably, this is just assumed. We do not grant the energy equation exclusive validity when discussing terminal ballistics (the other "end" of recoil). We all remember reading about "killing power" as a moment (mv, Keith), as a velocity (Roy W), as a force, and even as power (KW - don't laugh, I've seen it). Maybe we've gotten smarter. Nowadays noone treats calculated energy as more than just a rough guesstimate in the realm of terminal ballistics. Maybe we should acknowledge the recoil equation as just one piece of the perceived recoil puzzle. Sam

Entire Thread
Subject	Posted By	Posted
I read it in a magazine...	mike campbell	04/14/10 02:01 PM
Re: I read it in a magazine...	Jim Legg	04/14/10 02:18 PM
Re: I read it in a magazine...	Dingelfutz	04/14/10 02:28 PM
Re: I read it in a magazine...	eightbore	04/14/10 02:44 PM
Re: I read it in a magazine...	tudurgs	04/14/10 03:42 PM
Re: I read it in a magazine...	L. Brown	04/14/10 03:49 PM
Re: I read it in a magazine...	Chuck H	04/14/10 04:17 PM
Re: I read it in a magazine...	eightbore	04/14/10 04:34 PM
Re: I read it in a magazine...	Chuck H	04/14/10 05:50 PM
Re: I read it in a magazine...	Jim Legg	04/14/10 07:32 PM
Re: I read it in a magazine...	2-piper	04/14/10 07:40 PM
Re: I read it in a magazine...	Jim Legg	04/14/10 09:07 PM
Re: I read it in a magazine...	eightbore	04/14/10 10:38 PM
Re: I read it in a magazine...	Jim Legg	04/14/10 10:49 PM
Re: I read it in a magazine...	L. Brown	04/14/10 11:45 PM
Re: I read it in a magazine...	2-piper	04/15/10 03:29 AM
Re: I read it in a magazine...	keith	04/15/10 07:29 AM
Re: I read it in a magazine...	eightbore	04/15/10 12:06 PM
Re: I read it in a magazine...	keith	04/15/10 04:33 PM
Re: I read it in a magazine...	2-piper	04/15/10 12:33 PM
Re: I read it in a magazine...	L. Brown	04/15/10 01:37 PM
Re: I read it in a magazine...	Jim Legg	04/15/10 01:41 PM
Re: I read it in a magazine...	rwmckee	04/15/10 02:05 PM
Re: I read it in a magazine...	tudurgs	04/15/10 02:11 PM
Re: I read it in a magazine...	eightbore	04/15/10 02:55 PM
Re: I read it in a magazine...	DAM16SXS	04/15/10 03:17 PM
Re: I read it in a magazine...	Chuck H	04/15/10 03:55 PM
Re: I read it in a magazine...	Shotgunjones	04/15/10 03:57 PM
Re: I read it in a magazine...	eightbore	04/15/10 04:12 PM
Re: I read it in a magazine...	Shotgunjones	04/15/10 04:34 PM
Re: I read it in a magazine...	mike campbell	04/15/10 04:00 PM
Re: I read it in a magazine...	rwmckee	04/15/10 04:18 PM
Re: I read it in a magazine...	rwmckee	04/15/10 04:21 PM
Re: I read it in a magazine...	EDM	04/15/10 05:21 PM
Re: I read it in a magazine...	Samuel_Hoggson	04/14/10 10:45 PM
Re: I read it in a magazine...	Dingelfutz	04/14/10 02:21 PM
Re: I read it in a magazine...	David Furman	04/14/10 02:23 PM
Re: I read it in a magazine...	EDM	04/15/10 05:04 PM
Re: I read it in a magazine...	Wonko the Sane	04/15/10 05:19 PM
Re: I read it in a magazine...	David Furman	04/15/10 05:23 PM
Re: I read it in a magazine...	Dingelfutz	04/15/10 05:44 PM
Re: I read it in a magazine...	mike campbell	04/15/10 05:59 PM
Re: I read it in a magazine...	eightbore	04/15/10 05:20 PM
Re: I read it in a magazine...	keith	04/16/10 04:13 AM
Re: I read it in a magazine...	Samuel_Hoggson	04/15/10 06:11 PM
Re: I read it in a magazine...	Drew Hause	04/15/10 07:00 PM
Re: I read it in a magazine...	Jim Legg	04/15/10 07:21 PM
Re: I read it in a magazine...	rwmckee	04/15/10 08:06 PM
Re: I read it in a magazine...	David Furman	04/15/10 08:16 PM
Re: I read it in a magazine...	rwmckee	04/15/10 08:42 PM
Re: I read it in a magazine...	eightbore	04/15/10 09:22 PM
Re: I read it in a magazine...	SDH-MT	04/15/10 09:38 PM
Re: I read it in a magazine...	Jim Legg	04/15/10 09:51 PM
Re: I read it in a magazine...	mike campbell	04/15/10 10:15 PM
Re: I read it in a magazine...	eightbore	04/16/10 12:06 AM
Re: I read it in a magazine...	Chuck H	04/16/10 04:56 AM
Re: I read it in a magazine...	DAM16SXS	04/16/10 09:52 AM
Re: I read it in a magazine...	Chuck H	04/16/10 12:51 PM
Re: I read it in a magazine...	L. Brown	04/16/10 12:54 PM
Re: I read it in a magazine...	Jim Legg	04/16/10 01:32 PM
Re: I read it in a magazine...	eightbore	04/16/10 02:38 PM
Re: I read it in a magazine...	Jim Legg	04/16/10 03:49 PM
Re: I read it in a magazine...	eightbore	04/16/10 04:44 PM
Re: I read it in a magazine...	Jim Legg	04/16/10 06:24 PM
Re: I read it in a magazine...	mike campbell	04/16/10 05:22 PM
Re: I read it in a magazine...	Shotgunjones	04/16/10 06:24 PM
Re: I read it in a magazine...	David Furman	04/16/10 06:51 PM
Re: I read it in a magazine...	mike campbell	04/16/10 08:24 PM
Re: I read it in a magazine...	L. Brown	04/16/10 08:41 PM
Re: I read it in a magazine...	eightbore	04/16/10 10:17 PM
Re: I read it in a magazine...	eightbore	04/16/10 10:29 PM
Re: I read it in a magazine...	mike campbell	04/16/10 11:00 PM
Re: I read it in a magazine...	Jim Legg	04/16/10 11:29 PM
Re: I read it in a magazine...	DAM16SXS	04/17/10 02:04 AM
Re: I read it in a magazine...	L. Brown	04/17/10 11:55 AM
Re: I read it in a magazine...	DAM16SXS	04/17/10 12:18 PM
Re: I read it in a magazine...	eightbore	04/17/10 12:28 PM
Re: I read it in a magazine...	Shotgunjones	04/17/10 01:55 PM
Re: I read it in a magazine...	Jim Legg	04/17/10 02:08 PM
Re: I read it in a magazine...	Daryl Hallquist	04/17/10 02:23 PM
Re: I read it in a magazine...	DAM16SXS	04/17/10 04:17 PM
Re: I read it in a magazine...	Jim Legg	04/17/10 09:03 PM
Re: I read it in a magazine...	L. Brown	04/17/10 10:14 PM
Re: I read it in a magazine...	Daryl Hallquist	04/17/10 10:15 PM
Re: I read it in a magazine...	Jim Legg	04/18/10 12:11 AM
Re: I read it in a magazine...	2-piper	04/18/10 12:53 AM
Re: I read it in a magazine...	Stanton Hillis	04/18/10 02:39 AM
Re: I read it in a magazine...	mike campbell	04/18/10 04:42 AM
Re: I read it in a magazine...	Stanton Hillis	04/18/10 11:13 AM
Re: I read it in a magazine...	mike campbell	04/18/10 01:47 PM
Re: I read it in a magazine...	Stanton Hillis	04/18/10 06:13 PM
Re: I read it in a magazine...	mike campbell	04/18/10 08:44 PM
Re: I read it in a magazine...	Stanton Hillis	04/18/10 09:19 PM
Re: I read it in a magazine...	Jim Legg	04/18/10 10:01 PM
Re: I read it in a magazine...	Stanton Hillis	04/18/10 10:16 PM
Re: I read it in a magazine...	Jim Legg	04/18/10 10:21 PM
Re: I read it in a magazine...	L. Brown	04/18/10 11:29 PM
Re: I read it in a magazine...	rabbit	04/18/10 11:54 PM
Re: I read it in a magazine...	Jim Legg	04/19/10 12:02 AM
Re: I read it in a magazine...	rabbit	04/19/10 12:29 AM
Re: I read it in a magazine...	L. Brown	04/19/10 12:24 PM
Re: I read it in a magazine...	Jim Legg	04/19/10 01:50 PM
Re: I read it in a magazine...	J. Hall	04/19/10 03:06 PM
Re: I read it in a magazine...	Shotgunjones	04/19/10 04:13 PM
Re: I read it in a magazine...	2-piper	04/19/10 06:22 PM
Re: I read it in a magazine...	L. Brown	04/19/10 10:51 PM
Re: I read it in a magazine...	rwmckee	04/20/10 03:31 AM
Re: I read it in a magazine...	L. Brown	04/20/10 11:54 AM
Re: I read it in a magazine...	L. Brown	04/20/10 01:59 PM
Re: I read it in a magazine...	Jim Legg	04/20/10 03:50 PM
Re: I read it in a magazine...	L. Brown	04/21/10 01:41 AM
Re: I read it in a magazine...	2-piper	04/21/10 01:58 AM
Re: I read it in a magazine...	rabbit	04/21/10 02:46 AM
Re: I read it in a magazine...	L. Brown	04/21/10 11:19 AM
Re: I read it in a magazine...	Shotgunjones	04/21/10 01:37 PM
Re: I read it in a magazine...	Jim Legg	04/21/10 06:28 PM
Re: I read it in a magazine...	L. Brown	04/21/10 07:23 PM
Re: I read it in a magazine...	rabbit	04/21/10 11:45 PM
Re: I read it in a magazine...	2-piper	04/22/10 02:49 AM
Re: I read it in a magazine...	rabbit	04/22/10 03:35 AM
Re: I read it in a magazine...	L. Brown	04/22/10 12:33 PM
Re: I read it in a magazine...	Pete	04/22/10 03:29 PM
Re: I read it in a magazine...	2-piper	04/22/10 05:08 PM
Re: I read it in a magazine...	Wonko the Sane	04/22/10 05:49 PM
Re: I read it in a magazine...	L. Brown	04/22/10 10:37 PM
Re: I read it in a magazine...	mike campbell	04/23/10 03:04 AM
Re: I read it in a magazine...	2-piper	04/23/10 03:32 AM
Re: I read it in a magazine...	L. Brown	04/23/10 11:51 AM
Re: I read it in a magazine...	2-piper	04/23/10 12:34 PM
Re: I read it in a magazine...	L. Brown	04/25/10 11:23 PM
Re: I read it in a magazine...	2-piper	04/26/10 12:52 PM
Re: I read it in a magazine...	L. Brown	04/27/10 01:00 PM
Re: I read it in a magazine...	2-piper	04/28/10 01:43 AM
Re: I read it in a magazine...	2-piper	04/20/10 03:55 PM
Re: I read it in a magazine...	J. Hall	04/20/10 05:19 PM
Re: I read it in a magazine...	Wonko the Sane	04/20/10 06:09 PM
Re: I read it in a magazine...	Jim Legg	04/20/10 06:39 PM
Re: I read it in a magazine...	Wonko the Sane	04/20/10 06:59 PM
Re: I read it in a magazine...	mike campbell	04/20/10 07:42 PM
Re: I read it in a magazine...	Jim Legg	04/20/10 07:58 PM
Re: I read it in a magazine...	Samuel_Hoggson	04/20/10 09:22 PM
Re: I read it in a magazine...	Pete	04/21/10 01:22 AM
Re: I read it in a magazine...	Chuck H	04/17/10 01:56 PM
Re: I read it in a magazine...	Chuck H	04/16/10 02:44 PM
Re: I read it in a magazine...	2-piper	04/17/10 08:34 PM
Re: I read it in a magazine...	Shotgunjones	04/20/10 08:07 PM

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