Necking down brass help.

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98ssuck

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I'm having a issue trying to make 7mm Mauser brass. I am starting with once fired 30-06 brass. I have done with before. 30-06 to .308. I am a full length 7mm die. Screwed in so it touched the shell holder at full stroke then rotated out a ####hair. I removed the decapping pin.

So I put a lightly lubed case into the press. I am using hornady case lube. Pull down on the handle but it doesn't want to go so I put all my weight on it. My feet are literally off the ground. It's tough going and it wasn't this hard with other cartridges. Any suggestion
 
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"The key is too big for the lock"

Try 6mm Remington (aka .244 Remington) as it is near identical (7x57mm Mauser is the "parent" cartridge of the 6mm Rem)
 
Reinstall your decapping pin back in. It will help to straighten the neck.
Lube the case and depending on the brand of brass, you may need to do it in few stages. May be try unscrew the die a bit higher so you have more leverage with your press lever.

98ssuck said:
I'm having a issue trying to make 7mm Mauser brass. I am starting with once fired 30-06 brass. I have done with before. 30-06 to .308. I am a full length 7mm die. Screwed in so it touched the shell holder at full stroke then rotated out a ####hair. I removed the decapping pin.

So I put a lightly lubed case into the press. I am using hornady case lube. Pull down on the handle but it doesn't want to go so I put all my weight on it. My feet are literally off the ground. It's tough going and it wasn't this hard with other cartridges. Any suggestion
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I just did about 400 of those, annealed they collapsed, to much lube they
collapsed, (270 brass is easier) but I did manage 400pcs of 06.
I bought a reducing/trim die from Huntingtons so I cant comment on a regular sizing
Die, but once done you'll need to run an expander in and unless you have
a very large neck turn them.
how many do you need? If not to many I could do them for the cost of shipping
to and fro.
the Privi Brass from Tradex is pretty good stuff
 
I made 7.65 Belgian case from 30-06 cases and the necks were too thick and at the shoulder neck junction the neck had no room to expand

I ended up making the 7.65 cases from 7mm Mauser cases that were much closer in length, and not turning the necks.

If these 30-06 cases were fired many times they will be harder in the neck and shoulder area and need to be annealed. And to be truthful in my opinion not worth the effort to make them from the 30-06 case.

But last night I ordered 200 once fired Lake City 7.62 cases to convert to .243 and that is just forming half th shoulder and the case neck and a slight trim.

Sometimes a case forming die is needed that has more generous dimensions for the first sizing and then followed by the standard die for the final sizing.

Also if the 30-06 cases are old and dirty cleaning the cases will smooth the sizing operation.

I wet tumble all the once fired brass I buy with SS media and it helps.

And sometimes it helps to polish the die you are using to ease the sizing effort.

And sometimes you have to make many sizing attempts to get the final size. (Push, back off, push, back off, etc.)

And last but not least you can buy new 7mm cases or trade your 30-06 for some 7mm brass and not deal with thick necks, neck turning and excessive trimming to length.
 
I only resize for stuff that is hard to find or not available, or in some cases just way cheaper.
Back when I got my first K31, there was no 7.5x55 around, so I stocked up on some Winchester 284 brass which works very well for forming. Now the opposite is true...lots of 7.5 but no 284 (unless you want 6.5-284 lots of that $$$).
I had a hard time finding decent 243win brass for a while, so made a box or two out of Norma .308...it worked, but you get a very short neck, so not really ideal.
Got a deal on some 264Win brass when looking for brass for my 7mm...works great.
Needed some quality 270win none around, Norma 30'06 was the answer, bit short on the neck but a single firing should stretch that out.
Last purchase was a few hundred 280Rem that I'll turn into 7x64 as I can't find any of that #### around...
 
Hitzy said:
I only resize for stuff that is hard to find or not available, or in some cases just way cheaper.
Back when I got my first K31, there was no 7.5x55 around, so I stocked up on some Winchester 284 brass which works very well for forming. Now the opposite is true...lots of 7.5 but no 284 (unless you want 6.5-284 lots of that $$$).
I had a hard time finding decent 243win brass for a while, so made a box or two out of Norma .308...it worked, but you get a very short neck, so not really ideal.
Got a deal on some 264Win brass when looking for brass for my 7mm...works great.
Needed some quality 270win none around, Norma 30'06 was the answer, bit short on the neck but a single firing should stretch that out.
Last purchase was a few hundred 280Rem that I'll turn into 7x64 as I can't find any of that #### around...
Click to expand...

I'm just curious about the 280 to 7X64: Have you tried it yet? For all intents and purposes, they are identical: Wilhelm Brenneke beat Remington by 40 years. The base and rim of the latter is smaller by about .007" and .005", respectively than the 280rem. The base might be a very tight squeeze in the resize die at best... which is where I am curious.

I like originals: I have a rifle which uses Brenneke's rimmed version. Fortunately 7x65R ammunition is easier to find...

EDIT: OP, 7x57 brass is not obsolete, nor is the 8x57 parent case.
 
New Camper said:
I'm just curious about the 280 to 7X64: Have you tried it yet? For all intents and purposes, they are identical: Wilhelm Brenneke beat Remington by 40 years. The base and rim of the latter is smaller by about .007" and .005", respectively than the 280rem. The base might be a very tight squeeze in the resize die at best... which is where I am curious.

I like originals: I have a rifle which uses Brenneke's rimmed version. Fortunately 7x65R ammunition is easier to find...

EDIT: OP, 7x57 brass is not obsolete, nor is the 8x57 parent case.
Click to expand...

Sizing some today, I have a Lee Classic Cast and it's not too bad sizing them....easier then forming 7.5x55 out of 284Win by comparison. The 280 is Rem brand 1F $14/50 from Higginsons, needs about 1/8" trimmed off the neck after sizing. They fit the chamber anyway after sizing so that's good lol.
The 7x64 uses a Lee #10 shell holder which surprised me... I didn't think a few thou would warrant a different shell holder from the '06 family.
 
I got a stuck case on my third attempt. I had to wait until I had time at work to remove it. I figured it out. I used a 308 die screwed down just enough to move the should down to almost where should be on a 7x57. Then a 7x57 fl die to give the case the current dimensions. Now to trim and neck turn.
 
Suggest using castor oil(available in pharmacies) when reforming cases down.
I even annealed cases after each pass when making 6.5x58P from 8x57 or 30-06.
First to .308, and then 7mm, then 6.5
 
98ssuck said:
I got a stuck case on my third attempt. I had to wait until I had time at work to remove it. I figured it out. I used a 308 die screwed down just enough to move the should down to almost where should be on a 7x57. Then a 7x57 fl die to give the case the current dimensions. Now to trim and neck turn.
Click to expand...



You found the correct answer on your own and is exactly what I was going to suggest. I have made many cases from other cases as a wildcatter and it is best to do it in stages sometimes, like you just determined on your own. It is always best to move your shoulder back first with a die in the same caliber or even slightly larger than it is to try to reduce the neck and body diameters and move the shoulder back all at the same time. Another hint......R-P brass is some of the nicest brass I have ever used to form other cases with. Military is some of the toughest and W-W is hard and will crumple long before R-P and requires several steps where R-P doesn't.
I have always used RCBS sizing lube and a pad and never had a lube problem and when used correctly I've never stuck a case.

Hitzy..........my CZ 7X64 will NOT accept 280 Rem cases at all even after sizing in a 280 small base die and then a 7X64 die, however my 280 will accept the 7X64 easily. I bought 100 rds of loaded R-P 7X64 when I bought the rifle and still haven't shot them all off. Your local GS should be able to order them from Rem and they were the same price as 270 or 30-06, not ridiculous at all.
 
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When doing 3006 to 8x57 I trim the brass first. A couple of thousands shorter than target length, chamfer, then anneal the brass. Then when resize, you don't need to remove the ball expander.
 
c-fbmi said:
Hitzy..........my CZ 7X64 will NOT accept 280 Rem cases at all even after sizing in a 280 small base die and then a 7X64 die, however my 280 will accept the 7X64 easily. I bought 100 rds of loaded R-P 7X64 when I bought the rifle and still haven't shot them all off. Your local GS should be able to order them from Rem and they were the same price as 270 or 30-06, not ridiculous at all.
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Might be the Zastava M70 I have is on the looser side, but they chamber fine for me...a long slow steady stroke and I hold it at the end of the stroke for 5+ seconds.
I used a Lee FL die, R•P 1f brass as it was a bit lighter weight then the R-P stuff. It's still about 20gr heavier then the 1 box of Hornady 7x64 I was able to source...180gr avg for the HRN vs 200gr for the R•P.
For $14/50 for the 1F 280 from Higginsons, vs $55/50 for the 7x64 HRN all I can say is "WHEW".
The 7x64 is smaller in all dimensions then the 280Rem, the base gets a good squeeze for sure.


 
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