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Shooting & Reloading - Mausers, Big Bores and others >> Mauser Discussion Forum

alexbeer
.333 member

Reged: 10/04/08
Posts: 389
Loc: Tasmania, Australia

Re: .318 Westley Richards vs .333 Jeffery
08/05/11 07:45 AM

Great post szihn, agree with all that.

I love the 318WR. Just seems to me to be a beautifully balanced cartridge, good bullet weight, decent bullet diameter and a medium velocity.

Here's the Greenhill formula for those who might want it; but please take note of the quote from Daryl S's post above:

"Many fail to remember or realize it is showing the slowest twist that will work, not the optimum rate of twist"

The Greenhill formula

T= (150 x D)/R

Where:
T- is the twist required (number of inches per one revolution)
D- is the diameter of the bullet (in inches)
R- is the ratio of bullet length to bullet diameter (length divided by diameter)

Conversely, to find out what length bullet will be stabilized in a
given twist, use:

L= (150 x D x D)/T

Where:
L- is bullet length

The number 150 is a constant used by Greenhill, and works well at velocities in the vicinity of 1500 feet-per-second or greater. At 2800 feet-per-second the constant can be changed to 180 with good results.

Note that it is the bullet length that is important, not the bullet weight. Greenhill works well with all lead and lead-alloys commonly used for bullets.
One must also understand that Greenhill is derived from experience as well as from the calculated laws of physics. As such, it is a highly simplified, albeit useful equation. Greenhill was worked-out many years ago and is quoted in the
“British Textbook of Small Arms” (1929)

Hope this helps

Best
ALEX

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Subject	Posted by	Posted on
.318 Westley Richards vs .333 Jeffery	NitroX	03/05/11 10:54 PM
Re: .318 Westley Richards vs .333 Jeffery	mehulkamdar	10/07/11 10:50 AM
Re: .318 Westley Richards vs .333 Jeffery	BillfromOregon	11/07/11 12:38 AM
Re: .318 Westley Richards vs .333 Jeffery	mehulkamdar	11/07/11 01:44 AM
Re: .318 Westley Richards vs .333 Jeffery	DarylS	11/07/11 12:44 AM
Re: .318 Westley Richards vs .333 Jeffery	mehulkamdar	11/07/11 01:46 AM
Re: .318 Westley Richards vs .333 Jeffery	tophet1	11/07/11 07:35 AM
Re: .318 Westley Richards vs .333 Jeffery	mehulkamdar	11/07/11 10:36 AM
Re: .318 Westley Richards vs .333 Jeffery	tophet1	11/07/11 10:54 AM
Re: .318 Westley Richards vs .333 Jeffery	bwanabobftw	11/07/11 12:08 PM
Re: .318 Westley Richards vs .333 Jeffery	NitroX	03/05/11 11:11 PM
Re: .318 Westley Richards vs .333 Jeffery	bonanza	04/05/11 06:21 AM
Re: .318 Westley Richards vs .333 Jeffery	FATBOY404	04/05/11 07:01 AM
Re: .318 Westley Richards vs .333 Jeffery	tophet1	04/05/11 07:29 AM
Re: .318 Westley Richards vs .333 Jeffery	Huvius	04/05/11 08:41 AM
Re: .318 Westley Richards vs .333 Jeffery	500Nitro	04/05/11 08:46 AM
Re: .318 Westley Richards vs .333 Jeffery	Huvius	04/05/11 01:25 PM
Re: .318 Westley Richards vs .333 Jeffery	rigbymauser	04/05/11 03:24 PM
Re: .318 Westley Richards vs .333 Jeffery	tophet1	04/05/11 05:24 PM
Re: .318 Westley Richards vs .333 Jeffery	DarylS	05/05/11 02:39 AM
Re: .318 Westley Richards vs .333 Jeffery	tophet1	05/05/11 09:03 AM
Re: .318 Westley Richards vs .333 Jeffery	500Nitro	05/05/11 09:08 AM
Re: .318 Westley Richards vs .333 Jeffery	NitroX	06/05/11 01:25 AM
Re: .318 Westley Richards vs .333 Jeffery	500Nitro	06/05/11 01:33 AM
Re: .318 Westley Richards vs .333 Jeffery	NitroX	06/05/11 02:27 AM
Re: .318 Westley Richards vs .333 Jeffery	500Nitro	06/05/11 02:35 AM
Re: .318 Westley Richards vs .333 Jeffery	DarylS	06/05/11 08:03 AM
Re: .318 Westley Richards vs .333 Jeffery	eljefedouble	07/05/11 10:12 PM
Re: .318 Westley Richards vs .333 Jeffery	500Nitro	06/05/11 08:06 AM
Re: .318 Westley Richards vs .333 Jeffery	kuduae	07/05/11 09:28 AM
Re: .318 Westley Richards vs .333 Jeffery	NitroX	07/05/11 10:30 PM
Re: .318 Westley Richards vs .333 Jeffery	kuduae	09/05/11 07:48 AM
Re: .318 Westley Richards vs .333 Jeffery	rigbymauser	09/05/11 08:07 AM
Re: .318 Westley Richards vs .333 Jeffery	NitroX	09/05/11 08:59 PM
Re: .318 Westley Richards vs .333 Jeffery	eljefedouble	09/05/11 04:40 PM
Re: .318 Westley Richards vs .333 Jeffery	tophet1	09/05/11 04:58 PM
Re: .318 Westley Richards vs .333 Jeffery	Homer	09/05/11 07:09 PM
Re: .318 Westley Richards vs .333 Jeffery	NitroX	09/05/11 09:18 PM
Re: .318 Westley Richards vs .333 Jeffery	NitroX	09/05/11 09:30 PM
Re: .318 Westley Richards vs .333 Jeffery	FATBOY404	09/05/11 09:49 PM
Re: .318 Westley Richards vs .333 Jeffery	DarylS	10/05/11 01:52 AM
Re: .318 Westley Richards vs .333 Jeffery	500Nitro	10/05/11 04:19 AM
Re: .318 Westley Richards vs .333 Jeffery	rigbymauser	10/05/11 04:55 AM
Re: .318 Westley Richards vs .333 Jeffery	Homer	10/05/11 08:18 PM
Re: .318 Westley Richards vs .333 Jeffery	JDL	11/05/11 05:17 AM
Re: .318 Westley Richards vs .333 Jeffery	eljefedouble	11/05/11 09:20 AM
Re: .318 Westley Richards vs .333 Jeffery	NitroX	17/06/11 02:16 AM
Re: .318 Westley Richards vs .333 Jeffery	Mike_Bailey	17/06/11 05:37 AM
Re: .318 Westley Richards vs .333 Jeffery	BillfromOregon	07/07/11 01:22 AM
Re: .318 Westley Richards vs .333 Jeffery	500Nitro	09/05/11 07:50 PM
Re: .318 Westley Richards vs .333 Jeffery	NitroX	08/05/11 12:57 AM
Re: .318 Westley Richards vs .333 Jeffery	DarylS	08/05/11 01:14 AM
Re: .318 Westley Richards vs .333 Jeffery	Lee440	08/05/11 02:34 AM
Re: .318 Westley Richards vs .333 Jeffery	alexbeer	08/05/11 07:45 AM
Re: .318 Westley Richards vs .333 Jeffery	tophet1	08/05/11 07:35 AM
Re: .318 Westley Richards vs .333 Jeffery	FATBOY404	08/05/11 07:51 AM
Re: .318 Westley Richards vs .333 Jeffery	FATBOY404	08/05/11 07:57 AM
Re: .318 Westley Richards vs .333 Jeffery	Huvius	08/05/11 02:40 PM
Re: .318 Westley Richards vs .333 Jeffery	tophet1	08/05/11 03:11 PM
Re: .318 Westley Richards vs .333 Jeffery	500Nitro	08/05/11 03:21 PM
Re: .318 Westley Richards vs .333 Jeffery	tophet1	08/05/11 07:00 PM
Re: .318 Westley Richards vs .333 Jeffery	eljefedouble	08/05/11 09:16 PM
Re: .318 Westley Richards vs .333 Jeffery	tophet1	08/05/11 10:09 PM
Re: .318 Westley Richards vs .333 Jeffery	rigbymauser	08/05/11 11:35 PM
Re: .318 Westley Richards vs .333 Jeffery	eljefedouble	08/05/11 10:53 PM
Re: .318 Westley Richards vs .333 Jeffery	GK	08/05/11 04:10 PM
Re: .318 Westley Richards vs .333 Jeffery	AFRO408	08/05/11 06:06 PM
Re: .318 Westley Richards vs .333 Jeffery	NitroX	09/05/11 09:18 PM
Re: .318 Westley Richards vs .333 Jeffery	rigbymauser	08/05/11 04:03 PM
Re: .318 Westley Richards vs .333 Jeffery	szihn	08/05/11 02:19 AM
Re: .318 Westley Richards vs .333 Jeffery	tophet1	07/05/11 10:35 PM
Re: .318 Westley Richards vs .333 Jeffery	rigbymauser	07/05/11 05:11 PM
Re: .318 Westley Richards vs .333 Jeffery	AFRO408	07/05/11 07:03 PM
Re: .318 Westley Richards vs .333 Jeffery	rigbymauser	07/05/11 07:30 PM
Re: .318 Westley Richards vs .333 Jeffery	FATBOY404	07/05/11 07:13 PM
Re: .318 Westley Richards vs .333 Jeffery	NitroX	05/05/11 09:24 PM
Re: .318 Westley Richards vs .333 Jeffery	500Nitro	06/05/11 12:24 AM
Re: .318 Westley Richards vs .333 Jeffery	NitroX	06/05/11 01:05 AM
Re: .318 Westley Richards vs .333 Jeffery	DarylS	06/05/11 12:50 AM
Re: .318 Westley Richards vs .333 Jeffery	DarylS	06/05/11 12:54 AM
Re: .318 Westley Richards vs .333 Jeffery	500Nitro	06/05/11 12:56 AM
Re: .318 Westley Richards vs .333 Jeffery	eljefedouble	05/05/11 05:15 PM
Re: .318 Westley Richards vs .333 Jeffery	tophet1	05/05/11 05:33 PM
Re: .318 Westley Richards vs .333 Jeffery	500Nitro	04/05/11 03:27 PM
Re: .318 Westley Richards vs .333 Jeffery	rigbymauser	05/05/11 12:53 AM
Re: .318 Westley Richards vs .333 Jeffery	500Nitro	05/05/11 01:03 AM
Re: .318 Westley Richards vs .333 Jeffery	GK	04/05/11 10:38 AM
Re: .318 Westley Richards vs .333 Jeffery	NitroX	04/05/11 10:28 PM
Re: .318 Westley Richards vs .333 Jeffery	NitroX	04/05/11 10:38 PM
Re: .318 Westley Richards vs .333 Jeffery	eljefedouble	04/05/11 11:25 PM
Re: .318 Westley Richards vs .333 Jeffery	alexbeer	04/05/11 10:15 AM
Re: .318 Westley Richards vs .333 Jeffery	RobertL	04/05/11 12:01 AM
Re: .318 Westley Richards vs .333 Jeffery	DarylS	04/05/11 01:05 AM
Re: .318 Westley Richards vs .333 Jeffery	500Nitro	04/05/11 02:16 AM
Re: .318 Westley Richards vs .333 Jeffery	rigbymauser	04/05/11 02:56 AM
Re: .318 Westley Richards vs .333 Jeffery	500Nitro	04/05/11 03:00 AM
Re: .318 Westley Richards vs .333 Jeffery	rigbymauser	04/05/11 03:06 AM
Re: .318 Westley Richards vs .333 Jeffery	500Nitro	04/05/11 03:18 AM
Re: .318 Westley Richards vs .333 Jeffery	rigbymauser	04/05/11 03:52 AM
Re: .318 Westley Richards vs .333 Jeffery	500Nitro	04/05/11 03:57 AM
Re: .318 Westley Richards vs .333 Jeffery	rigbymauser	04/05/11 04:05 AM
Re: .318 Westley Richards vs .333 Jeffery	500Nitro	04/05/11 05:24 AM
Re: .318 Westley Richards vs .333 Jeffery	DarylS	04/05/11 12:58 AM

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