Forums.NitroExpress.com

Home | Ezine | Forums | Links | Contact NitroExpress.com: 5.6 x 61 Vom Hofe Super express

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

Kiwi_bloke
.333 member

Reged: 03/09/09
Posts: 256
Loc: New Zealand

Re: 5.6 x 61 Vom Hofe Super express
30/07/10 04:20 PM

Regarding the problems Rolf has had with 5,6x61 SEvH, this caliber has a reputation for Secondary Explosion Effect, (S.E.E.). The case is very large for the bore size so it's said to be overbored. Some of the early recommended powders do not seem to have filled the case well. It seems Rottweil R905 is no longer recommended.

Lutz Moeller recommeds, in connection with this cartridge especially, to only choose powders that ideally fill the case 100% (or better still lightly compressed), but never less than to the shoulder base. You shouldn't exceed published data to achieve this, obviously.

S.E.E. causes are not precisely known, but for instance, one theory is that there's a partial combustion and then a short hesitation that releases certain explosive gases; these are then ignited in the secondary explosion. Because these gases release much more energy, the rifle blows. Other complications that can cause this too-weak initial combustion can be using a standard when a magnum primer was specified, or a too weak firing pin spring.

Wild und Hund in 4/1986 stated that new data using Hodgdon H870 cured these early problems. (It says, in part, "Bei diesen Pulversorten wird übrigens eine Ladedichte von 100 Prozent erreicht. Es ergaben sich in dieser Zeit keine Beanstandungen"). However, H870 is now discontinued and it also created certain fouling problems in this caliber for which a Lee Factory Crimp die was only a partial cure for me.

I now only use Hodgdon H4831SC using data from Jeff Munnell's published article in Reloader magazine.

Post Extras

Print Post

Remind Me!

Notify Moderator

Entire topic
Subject	Posted by	Posted on
5.6 x 61 Vom Hofe Super express	rigbymauser	29/07/10 05:49 AM
Re: 5.6 x 61 Vom Hofe Super express	tophet1	29/07/10 08:35 AM
Re: 5.6 x 61 Vom Hofe Super express	xausa	29/07/10 11:13 AM
Re: 5.6 x 61 Vom Hofe Super express	lancaster	29/07/10 12:41 PM
Re: 5.6 x 61 Vom Hofe Super express	HuntingSchneider	29/07/10 03:13 PM
Re: 5.6 x 61 Vom Hofe Super express	Rolf	29/07/10 09:01 PM
Re: 5.6 x 61 Vom Hofe Super express	rigbymauser	30/07/10 01:45 AM
Re: 5.6 x 61 Vom Hofe Super express	Kiwi_bloke	30/07/10 03:43 PM
Re: 5.6 x 61 Vom Hofe Super express	Kiwi_bloke	30/07/10 04:20 PM
Re: 5.6 x 61 Vom Hofe Super express	grandveneur	01/08/10 12:01 AM
Re: 5.6 x 61 Vom Hofe Super express	rigbymauser	01/08/10 02:26 AM
Re: 5.6 x 61 Vom Hofe Super express	Bramble	01/08/10 03:22 AM
Re: 5.6 x 61 Vom Hofe Super express	rigbymauser	01/08/10 03:44 AM
Re: 5.6 x 61 Vom Hofe Super express	Bramble	01/08/10 04:43 AM
Re: 5.6 x 61 Vom Hofe Super express	Kiwi_bloke	01/08/10 08:52 AM
Re: 5.6 x 61 Vom Hofe Super express	kamilaroi	01/08/10 12:04 PM
Re: 5.6 x 61 Vom Hofe Super express	kuduae	03/08/10 06:43 AM
Re: 5.6 x 61 Vom Hofe Super express	rigbymauser	04/08/10 07:42 PM
Re: 5.6 x 61 Vom Hofe Super express	NitroX	05/08/10 06:41 PM
Re: 5.6 x 61 Vom Hofe Super express	rigbymauser	05/08/10 08:05 PM
Re: 5.6 x 61 Vom Hofe Super express	Yochanan	05/08/10 06:31 AM
Re: 5.6 x 61 Vom Hofe Super express	rigbymauser	05/08/10 04:28 PM
Re: 5.6 x 61 Vom Hofe Super express	grandveneur	01/08/10 03:21 AM
Re: 5.6 x 61 Vom Hofe Super express	kamilaroi	30/07/10 07:15 PM
Re: 5.6 x 61 Vom Hofe Super express	Kiwi_bloke	31/07/10 07:28 PM
Re: 5.6 x 61 Vom Hofe Super express	NitroX	29/07/10 08:59 PM

Extra information

0 registered and 80 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: 19081

Jump to

NitroExpress.com

Powered by UBB.threads™ 6.5.5

Home | Ezine | Forums | Links | Contact

Copyright 2003 to 2011 - all rights reserved