9.3x57 from 30/06

[10x]

Rough trim to length using a drill press and then once through the 9.3x57 size die to deprime.
Then a modified lee case trimmer (7x57 with a collar to take it out to 9.3)

and how does one delete a photo???
Or delete the entire post and start over?

[15meter]

I thought to edit the post, get your cursor past where you wanted to delete and simply backspace.

On a technical point, on my tablet, it looks like you annealed the brass first. If you did, you may want to try a couple pre-annealed. I've found that the harder brass cuts cleaner than post-annealed brass.

If it's not annealed, you can just ignore my rambling, most people do

[Texas by God]

What about just necking up 8x57 brass? Does it turn out short?

Sent from my SAMSUNG-SM-G930A using Tapatalk

[444ttd]

What about just necking up 8x57 brass? Does it turn out short?

Sent from my SAMSUNG-SM-G930A using Tapatalk

if i remember correctly, 8x57 necked up to 9.3 is about .020" less than a original 9.3x57. i use 8x57 prvi brass necked up to 9.3. less trimming and i hate trimming!!!!!

[sharps4590]

I made a few over one hundred 9.3 X 57 out of '06 brass and I believe I sized them before trimming and annealing. My dies are CH-4D and they have that wonderful, long tapered expander plug and I don't remember losing a case.

And I'm with 444, trimming is my absolutely least favorite handloading activity. I use a dremel type tool with a cut-off blade to get close then trim in my trimmer

[10x]

I thought to edit the post, get your cursor past where you wanted to delete and simply backspace.

On a technical point, on my tablet, it looks like you annealed the brass first. If you did, you may want to try a couple pre-annealed. I've found that the harder brass cuts cleaner than post-annealed brass.

If it's not annealed, you can just ignore my rambling, most people do

I will work on my posting skills,
Yes , the first step was annealing the brass.
I lost 1 cast to a split but I will try cutting to length before annealing..
Any suggestions that make life easier are welcome

[Zingger]

When I am making my 8x57, 7x57 from 30-06. A Redding trim/form die for the 8x57 has made life a great deal easier. Lube and run through, cut to length, full length size and trim as necessary. If I didn't shoot a 9.3x62 the x57 would be on the short list as well!

Zingger.

[10x]

When I am making my 8x57, 7x57 from 30-06. A Redding trim/form die for the 8x57 has made life a great deal easier. Lube and run through, cut to length, full length size and trim as necessary. If I didn't shoot a 9.3x62 the x57 would be on the short list as well!

Zingger.

Really bad pun.
the 9.3x57 is sort of a short 9.3x62..... I like the "short list" reference

[Larry Gibson]

When forming 35x57 cases from '06 cases I initially size the '06 case with the expander/decap rod removed from the FL die. I then use a small tune cutter to cut off excess brass slightly ahead of final trim length. I back the FL die out 3/4 turn for forming so after the excess brass is cut off the case can be trimmed with a case trimmer and then final sized so the case headspace is a crush fit in the rifle to be used. Same technique should work in the 9.3x57.

[10x]

When forming 35x57 cases from '06 cases I initially size the '06 case with the expander/decap rod removed from the FL die. I then use a small tune cutter to cut off excess brass slightly ahead of final trim length. I back the FL die out 3/4 turn for forming so after the excess brass is cut off the case can be trimmed with a case trimmer and then final sized so the case headspace is a crush fit in the rifle to be used. Same technique should work in the 9.3x57.

Thank you. I will be using that technique to see how it works.

[10x]

Case trimming 9.3x57 with the modified Lee case trimmer in a drill press And the drill press modified campher cutter

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[15meter]

Case trimming 9.3x57 with the modified Lee case trimmer in a drill press And the drill press modified camphor cutter

You got moths in your cases? Never had that before, hope the camphor helps


Don't you just love autocorrect?

[10x]

You got moths in your cases? Never had that before, hope the camphor helps


Don't you just love autocorrect?

Moths are not something you want in a case.....
And auto correct is amusing
Spelling error corrected, thank you.

[10x]

30/06 resized in a 9.3x57 resize die, no expander plug, then cut to 58mm as per Larry Gibsons suggestion
I will run it through the 9.3x57 die with an expander plug, then trim to length, then campher the case mouth for cast bullets.
This seems to be a nicer method

[Wayne Smith]

I've only necked up 8x57 - do you have to thin the necks of the 30-06 brass?

[10x]

I've only necked up 8x57 - do you have to thin the necks of the 30-06 brass?

That depends on the brand of brass and the chamber dimensions of your gun.
So far I am loading 0.368" cast bullets in brass without neck thinning and they chamber easily in my L46 and M98.
My 9.3x62 FN M98 has an incredibly generous neck with 0.009" tolerance. I could load bullets up to 0.374" without the neck binding in the chamber
Always check your reloads to ensure they chamber easily. Determine the largest diameter cartridge neck your chamber will accommodate and measure to ensure that the neck of the cartridge is 0.001" to 0.002" smaller than the neck in your chamber. you will avoid unpleasant pressure excursions this way.

[Roundball]

I am working up to reloading 9.3x57s for a Swedish Mauser from 8mm brass. Where I'm at is to stop and start all over again. Opening the 8mm brass was easy with a set of Hornady dies. The tapered expander ball makes neck expansion do-able with no case loss. I'm not sure it would not be better for me, with this rifle, to shorten 30-06 brass. The case, with step in the neck, would be fire formed using a small charge of fast powder-if possible. Sounds good but I expecting the wheels to come off at some point.

[10x]

I am working up to reloading 9.3x57s for a Swedish Mauser from 8mm brass. Where I'm at is to stop and start all over again. Opening the 8mm brass was easy with a set of Hornady dies. The tapered expander ball makes neck expansion do-able with no case loss. I'm not sure it would not be better for me, with this rifle, to shorten 30-06 brass. The case, with step in the neck, would be fire formed using a small charge of fast powder-if possible. Sounds good but I expecting the wheels to come off at some point.

First thing i do is anneal the neck and shoulder of the case.
I expand the necks of 25/06, 280 rem, 30/06, and 270 to 0.415" or so,
I then trim to 58 mm, use Imperial® size lube on the inside of the neck and on the case,
And then run it through my Hornaday Full length size die
Last step is to trim to length and then thin the necks of the cases.
Of 300 or so cases formed this way I have lost less than five
For cast bullets it makes a difference to thin the necks.

[sharps4590]

What 10X said. I don't remember the groove diameter of my 9.3 Husky but I do know it has a "loose bore and a tight neck." I've read this is a fairly common condition. My cast bullets I run through a .372 sizing die so, as 10X said, case necks have to be thinned or an over pressure condition can exist. My loads are fairly mild and with open sights at 50 yards if it was any more accurate I wouldn't be able to tell.

[10x]

What 10X said. I don't remember the groove diameter of my 9.3 Husky but I do know it has a "loose bore and a tight neck." I've read this is a fairly common condition. My cast bullets I run through a .372 sizing die so, as 10X said, case necks have to be thinned or an over pressure condition can exist. My loads are fairly mild and with open sights at 50 yards if it was any more accurate I wouldn't be able to tell.

It is accurate enough,
A 2" group at 100 yards is accurate enough. A deer, moose, elk, or bear will not notice the correct, specific hair I was aiming at was not hit....