Forums.NitroExpress.com

Home | Ezine | Forums | Links | Contact NitroExpress.com: .318 or .323 - best bullet match for my Type S

View recent messages : 24 hours | 48 hours | 7 days | 14 days | 30 days | 60 days | More Smilies

*** Enjoy NitroExpress.com? Participate and join in. ***

You are not logged in. [Login]

Main Index · Search · Active Topics
New user · Who's Online · FAQ · Calendar

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

DarylS
.700 member

Reged: 10/08/05
Posts: 26610
Loc: Beautiful British Columbia, Ca...

Re: .318 or .323 - best bullet match for my Type S
10/11/11 08:37 AM

In Europe, the CIP pressure level for the 57mm case, is 57,000PSI.

The 2 American makers, RP and WW of 8x57 ammo, load them with .321" bullets and to only 34,000PSI.

I recall one of P.O. Ackley's experiments - standard chambered .30/06 (probably a Springfield) with a .308" groove diameter - shooting 150gr. bullets using a normal IMR4895 load. the velocity and pressure was recorded.

They went to sucessively larger 150gr. bullets - then at .358" 150gr., had to run a .35Whelen reamer in to allow the .35 Remington 150gr. bullet to be seated and chambered for proper neck clearance.

Still using the original load, that one fired just fine, indeed, Ackley reported higher velocity and lower pressure with each increase in bullet size. They didn't know why, but it was exciting for them to observe this. They did this test due to the print stating a .323" bullet would blow up a .318" barrel. Ackely proved that if the chamber had the neck clearance, the larger bullet greated no such danger. perhaps the danger was actually firing modern 8x57S (57,000SPI) ammo in an old model 1988, not the 1998.

The logistics noted were that the powder peaked pressure some inches up the tube and by then, the bullets were of course, the correct size for the bore as they'd draw down in the throat itself, when pressure was much lower. Perhaps this heavy drawing increased initial pressure, but that seemingly was not detrimental to the rifle nor the test.

He then spoke/wrote of WW11 or perhaps pre WW11 German experiments that had an 8mm barrel taper bored and rifled with a .257" muzzle groove diameter. That one gave outstanding velocity/pressure stats but due to being so difficult to rifle, the project was abandoned. This was reported in the #1 book, I think. My memory isn't what it used to be Please forgive any details missed.

--------------------
Daryl

"a gun without hammers is like a Spaniel without ears" King George V

Post Extras

Print Post

Remind Me!

Notify Moderator

Entire topic
Subject	Posted by	Posted on
.318 or .323 - best bullet match for my Type S	twalker	20/09/11 03:45 PM
Re: .318 or .323 - best bullet match for my Type S	DarylS	06/01/12 01:21 PM
Re: .318 or .323 - best bullet match for my Type S	doubleriflejack	25/09/11 03:59 AM
Re: .318 or .323 - best bullet match for my Type S	twalker	09/11/11 06:55 PM
Re: .318 or .323 - best bullet match for my Type S	DarylS	10/11/11 02:37 AM
Re: .318 or .323 - best bullet match for my Type S	kuduae	10/11/11 06:37 AM
Re: .318 or .323 - best bullet match for my Type S	DarylS	10/11/11 08:37 AM
Re: .318 or .323 - best bullet match for my Type S	xausa	10/11/11 09:27 AM
Re: .318 or .323 - best bullet match for my Type S	DarylS	10/11/11 11:51 AM
Re: .318 or .323 - best bullet match for my Type S	twalker	10/11/11 03:53 PM
Re: .318 or .323 - best bullet match for my Type S	georgegibbs505	10/11/11 05:17 PM
Re: .318 or .323 - best bullet match for my Type S	mbogo3	02/02/12 03:03 PM
Re: .318 or .323 - best bullet match for my Type S	mbogo3	06/01/12 12:21 PM
Re: .318 or .323 - best bullet match for my Type S	xausa	06/01/12 04:50 PM
Re: .318 or .323 - best bullet match for my Type S	mckinney	11/11/11 01:26 AM
Re: .318 or .323 - best bullet match for my Type S	twalker	11/11/11 05:03 AM
Re: .318 or .323 - best bullet match for my Type S	DarylS	12/11/11 03:58 AM
Re: .318 or .323 - best bullet match for my Type S	Buchsemann	10/11/11 08:27 AM
Re: .318 or .323 - best bullet match for my Type S	458Shooter	21/09/11 03:47 PM
Re: .318 or .323 - best bullet match for my Type S	Homer	21/09/11 06:31 PM
Re: .318 or .323 - best bullet match for my Type S	DarylS	22/09/11 02:35 AM
Re: .318 or .323 - best bullet match for my Type S	justcurious	23/09/11 08:36 AM
Re: .318 or .323 - best bullet match for my Type S	twalker	23/09/11 10:01 AM
Re: .318 or .323 - best bullet match for my Type S	DarylS	23/09/11 11:31 AM
Re: .318 or .323 - best bullet match for my Type S	Rolf	23/09/11 08:52 PM
Re: .318 or .323 - best bullet match for my Type S	twalker	23/09/11 08:05 AM
Re: .318 or .323 - best bullet match for my Type S	500Nitro	23/09/11 08:17 AM
Re: .318 or .323 - best bullet match for my Type S	FATBOY404	20/09/11 03:49 PM
Re: .318 or .323 - best bullet match for my Type S	rigbymauser	20/09/11 04:18 PM
Re: .318 or .323 - best bullet match for my Type S	500Nitro	20/09/11 04:41 PM
Re: .318 or .323 - best bullet match for my Type S	DarylS	21/09/11 01:23 AM
Re: .318 or .323 - best bullet match for my Type S	twalker	21/09/11 02:41 AM

Extra information

2 registered and 56 anonymous users are browsing this forum.

Moderator: NitroX

Forum Permissions
      You cannot start new topics
      You cannot reply to topics
      HTML is disabled
      UBBCode is enabled

Rating:
Thread views: 17940

Jump to

NitroExpress.com

Powered by UBB.threads™ 6.5.5

Home | Ezine | Forums | Links | Contact

Copyright 2003 to 2011 - all rights reserved