Forums.NitroExpress.com

Home | Ezine | Forums | Links | Contact NitroExpress.com: 1903 groove diameter

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 >> Mannlicher Discussion forum & Archive

Kiwi_bloke
.333 member

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

Re: 1903 groove diameter
21/07/12 10:42 AM

Here's my notes:

Bore slugged by Christian Neubauer, gunsmith 03/10/11. He reports:

Mannlicher:
.2564 .2565 .2564 across three different locations on the lands
.2681 .2680 .2678 “ groove
All measurements done in thousandths of an inch with a 0—0001” reduced anvil micrometer. Note, reduced anvil means small anvil, about 1mm.

Ray Ordorica discusses bore sizes in Handloader's Digest 15th edition. In essence, groove diameter of pre-1945 6,5x54 M.Sch. rifles is typically .2666 to .268”. Greener, quoted by Ordorica, says lands .256” and grooves .268”. Bingo ! So 4 thou over bullet size is normal for pre-1945.

Just keep in mind that, the oversize Carcano bullet you refer to is not very tapered, and will jam in the lands (and create real pressure issues), if set to a normal C.O.L. found in reloading manuals for 6,5x54 M-S. To establish the correct C.O.L. for your rifle with this bullet you'll need a special tool that was made by Stoney Point but which is now retailed by Hornady.

Post Extras

Print Post

Remind Me!

Notify Moderator

Entire topic
Subject	Posted by	Posted on
1903 groove diameter	clatrans	21/07/12 06:05 AM
Re: 1903 groove diameter	Kiwi_bloke	21/07/12 10:42 AM
Re: 1903 groove diameter	DarylS	21/07/12 11:04 AM
Re: 1903 groove diameter	MikeRowe	21/07/12 01:05 PM
Re: 1903 groove diameter	Paul	21/07/12 05:45 PM
Re: 1903 groove diameter	DarylS	22/07/12 01:41 AM
Re: 1903 groove diameter	clatrans	24/07/12 05:28 AM
Re: 1903 groove diameter	MikeRowe	25/07/12 03:14 AM
Re: 1903 groove diameter	clatrans	25/07/12 05:22 AM
Re: 1903 groove diameter	DarylS	25/07/12 06:35 AM
Re: 1903 groove diameter	clatrans	25/07/12 07:05 AM
Re: 1903 groove diameter	DarylS	25/07/12 10:56 AM
Re: 1903 groove diameter	Paul	25/07/12 01:48 PM
Re: 1903 groove diameter	DarylS	25/07/12 11:49 PM
Re: 1903 groove diameter	Paul	27/07/12 10:16 PM
Re: 1903 groove diameter	DarylS	27/07/12 11:50 PM
Re: 1903 groove diameter	Paul	28/07/12 01:57 PM
Re: 1903 groove diameter	DarylS	29/07/12 02:08 AM
Re: 1903 groove diameter	Paul	29/07/12 11:24 AM
Re: 1903 groove diameter	clatrans	28/07/12 12:46 AM
Re: 1903 groove diameter	DarylS	28/07/12 09:32 AM
Re: 1903 groove diameter	malco	22/07/12 12:40 AM

Extra information

1 registered and 29 anonymous users are browsing this forum.

Moderator: CptCurl

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

Rating:
Thread views: 11394

Jump to

NitroExpress.com

Powered by UBB.threads™ 6.5.5

Home | Ezine | Forums | Links | Contact

Copyright 2003 to 2011 - all rights reserved