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Shooting & Reloading - Mausers, Big Bores and others >> Mannlicher Discussion forum & Archive

Paul
.400 member

Reged: 28/08/07
Posts: 1031
Loc: Melbourne, Victoria, Australia

Re: 1903 groove diameter
21/07/12 05:45 PM

Could there be a difference in the design of the MS rifling that upsets .263" bullets into the larger groove diameter to give obturation?

I've long thought there was something strange and deep-looking about the 1903's rifling, beyond the fast pitch. And no wonder - with a bore of .256, a groove of .268 would be about 50% deeper than used in most American rifles/calibres. Maybe something has to give.

BTW, the 30-year-old 6.5x54 RWS factory loads I have here show a diameter of only .2615" just ahead of the cannelure and case mouth. Though other calibres miked at that point sometimes showed half a thou reduction, these 159-grainers are pretty straight for a fair way. My guess is they do not have a .267" body dia.

Edited by Paul (21/07/12 05:53 PM)

Post Extras

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

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