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Shooting & Reloading - Mausers, Big Bores and others >> Rifles

DarylS
.700 member

Reged: 10/08/05
Posts: 27032
Loc: Beautiful British Columbia, Ca...

Re: 9.3 x 57 Puzzle
03/01/18 05:54 AM

Ackley did exactly that, with a .30/06 ctg. and successively larger diameter bullets, with the then normal 150gr.mil-spec load of 45gr. IMR4895.

He used 1250gr. .312's, .323's, had to use a chucking reamer to open up the chamber neck to hold a .358 150gr. bullet, all loaded and shot with 45gr. H4895. In each instance, he got an increase in velocity and reduction in pressure - go figure.

He noted, that by the time the powder charge hit peak pressure, the bullet was already up the bore a few inches and was the correct size.

Using thicker brass will reduce the sizing 'wear'.

Just remembered that Privi brass (was given some) has thicker necks than does necked up 8x57. In normal formed 8x57 brass, I was able to use up to .367" bullets in my chamber, however in the Privi brass, .366" were the largest usable. The groove diameter in my Husky is .370".

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

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

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Subject	Posted by	Posted on
9.3 x 57 Puzzle	Carpetsahib	02/01/18 05:59 AM
Re: 9.3 x 57 Puzzle	DarylS	02/01/18 06:12 AM
Re: 9.3 x 57 Puzzle	Carpetsahib	02/01/18 11:52 AM
Re: 9.3 x 57 Puzzle	DarylS	02/01/18 03:35 PM
Re: 9.3 x 57 Puzzle	szihn	02/01/18 04:09 PM
Re: 9.3 x 57 Puzzle	Carpetsahib	03/01/18 01:05 AM
Re: 9.3 x 57 Puzzle	4seventy	03/01/18 03:52 PM
Re: 9.3 x 57 Puzzle	DarylS	03/01/18 05:54 AM
Re: 9.3 x 57 Puzzle	Igorrock	03/01/18 05:49 AM
Re: 9.3 x 57 Puzzle	lancaster	02/01/18 06:22 PM

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