Forums.NitroExpress.com

Home | Ezine | Forums | Links | Contact NitroExpress.com: 7x65R, a killer for the break open gun?

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 >> Rifles

NitroX
.700 member

Reged: 25/12/02
Posts: 39188
Loc: Barossa Valley, South Australi...

Re: 7x65R, a killer for the break open gun?
09/01/13 04:39 PM

I saw the question and guessed many knowledgeable guys would answer this one.

I think there are a few issues with break open rifles, case design and pressure.

1. Rimmed or flanged. Better extraction. The reason a better choice is a rimmed bras cartridge.

2. Pressure. Pressure is an issue as the break open actions are often weaker than say a bolt action. However in my inexperienced opinion when the rifle calibre is smaller and the case smaller it is less of an issue because of no. 3.

3. Back thrust. Or whatever it is called. Combining higher pressure with greater back thrust is a problem with break open rifles. Larger calibre cartridges develop greater back thrust than smaller calibres. The reason higher pressure big bore cartridges are often less wise in a break open rifle than lower pressure alternatives. The same pressure level say in a .450 sized cartridge would be unwise.

But it seems to me, the reason the higher pressure 7x65R is fine in break open rifles, is while it has higher pressure, it is rimmed so better extraction, and the cartridge size develops lesser back thrust so the actions can handle the pressure.

Is the above incorrect? Simplistic? Correct? I am not a gunmaker or an engineer. I welcome corrections.

--------------------
John aka NitroX

...
Govt get out of our lives NOW!
"I love the smell of cordite in the morning."
"A Sharp spear needs no polish"

Post Extras

Print Post

Remind Me!

Notify Moderator

Entire topic
Subject	Posted by	Posted on
7x65R, a killer for the break open gun?	vegard_dino	09/01/13 04:14 AM
Re: 7x65R, a killer for the break open gun?	ruffcountry	18/01/13 03:05 PM
Re: 7x65R, a killer for the break open gun?	Chasseur	11/01/13 10:41 AM
Re: 7x65R, a killer for the break open gun?	HeymSR20	12/01/13 10:36 AM
Re: 7x65R, a killer for the break open gun?	Chasseur	12/01/13 03:23 PM
Re: 7x65R, a killer for the break open gun?	HeymSR20	13/01/13 10:38 PM
Re: 7x65R, a killer for the break open gun?	Chasseur	14/01/13 06:17 PM
Re: 7x65R, a killer for the break open gun?	Kiwi_bloke	05/03/13 06:01 AM
Re: 7x65R, a killer for the break open gun?	Chasseur	27/03/14 07:38 AM
Re: 7x65R, a killer for the break open gun?	Yochanan	15/11/14 08:56 AM
Re: 7x65R, a killer for the break open gun?	lancaster	15/11/14 03:47 PM
Re: 7x65R, a killer for the break open gun?	HeymSR20	16/01/13 01:21 AM
Re: 7x65R, a killer for the break open gun?	Chasseur	16/01/13 08:27 AM
Re: 7x65R, a killer for the break open gun?	HeymSR20	16/01/13 10:28 PM
Re: 7x65R, a killer for the break open gun?	grandveneur	09/01/13 06:02 AM
Re: 7x65R, a killer for the break open gun?	kuduae	09/01/13 06:49 AM
Re: 7x65R, a killer for the break open gun?	500Nitro	09/01/13 07:01 AM
Re: 7x65R, a killer for the break open gun?	xausa	09/01/13 09:50 AM
Re: 7x65R, a killer for the break open gun?	500Nitro	09/01/13 10:06 AM
Re: 7x65R, a killer for the break open gun?	DarylS	09/01/13 11:49 AM
Re: 7x65R, a killer for the break open gun?	NitroX	09/01/13 04:39 PM
Re: 7x65R, a killer for the break open gun?	HeymSR20	09/01/13 11:31 PM
Re: 7x65R, a killer for the break open gun?	Grenadier	10/01/13 01:22 AM
Re: 7x65R, a killer for the break open gun?	grandveneur	10/01/13 04:03 AM
Re: 7x65R, a killer for the break open gun?	Buchsemann	10/01/13 07:24 AM
Re: 7x65R, a killer for the break open gun?	kuduae	10/01/13 10:16 AM
Re: 7x65R, a killer for the break open gun?	fuhrmann	10/01/13 03:25 PM
Re: 7x65R, a killer for the break open gun?	vegard_dino	10/01/13 06:27 PM
Re: 7x65R, a killer for the break open gun?	HeymSR20	11/01/13 12:10 AM
Re: 7x65R, a killer for the break open gun?	DarylS	10/01/13 05:34 AM
Re: 7x65R, a killer for the break open gun?	Rolf	09/01/13 11:10 PM
Re: 7x65R, a killer for the break open gun?	93mouse	09/01/13 05:40 AM
Re: 7x65R, a killer for the break open gun?	bakposten	09/01/13 05:08 AM

Extra information

0 registered and 47 anonymous users are browsing this forum.

Moderator:

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

Rating:
Thread views: 21821

Jump to

NitroExpress.com

Powered by UBB.threads™ 6.5.5

Home | Ezine | Forums | Links | Contact

Copyright 2003 to 2011 - all rights reserved