Hydraulic case forming

[Newton]

If you are converting cases to a different calibre then such a procedure might be necessary.

Necking up / necking down are quite easy processes ( changing caliber )
Most people fire form when necks / shoulders and case taper are changed . modified = Ackley AI
or
When a new cartridge ( design ) is being made from an old one

With a chamber sizing reamer a gunsmith can make a FL sizing die from a blank.
Even without such a reamer IF one had a proper accurate chamber diagram , a good CNC operator on the correct machinery would be able to make you a FL die from a blank.
If the change was drastic you would need a form die - or perhaps two before getting to the final chamber FL sizing die

People who have old firearms for which factory brass is no longer available have to follow these procedures.

[oafpatroll]

He thought that it might be possible - with a lot of problems that would have to be solved
The pressure spoken about here did not seem to scare him
I have not yet found out how much pressure you need to move cartridge case brass ( apart from the web and head ) a few thou mm ?
It might be in the realm of quite reasonable ?
The pressures generated by a normal discharge are what happens when the propellant ignites
To "form" the brass might not require anywhere near these sorts of pressures ? 
A good engineer always designs a - well thought out pressure release / relief valve

What could the possible advantages of using a compressible gas to do this work be over an incompressible liquid? 

[Newton]

What could the possible advantages of using a compressible gas to do this work be over an incompressible liquid? 

The water method as currently done by private individuals is messy and archaic
Hitting a ram ( plunger ) a couple of times with a lead hammer and making sure water does not spray everywhere is hardly an efficient or accurate process.
Perhaps the in-compressible liquid method needs a better worked out process with better equipment ?
Something an industrial process engineer needs to look at

The standard method of fire-forming IS a compressible gas expansion method - although the gas is in solid form
( the gas is produced by the oxidization of the propellant )

Perhaps one could use LPG instead of propellant for "fire-forming" ?

One needs to keep on thinking of different options and possibilities - otherwise we would still be using black-powder and round musket balls !

[oafpatroll]

Sounds like a solution looking for a problem and I still dont see any benefits to what you propose.

[Treeman]

Sounds like a solution looking for a problem and I still dont see any benefits to what you propose.

*************************
Saving costs of components +
Cabe done at home +
Complexity -
Initial costs -
Potential safety issues -

[janfred]

Can be done at home, no.

[Newton]

Can be done at home, no.

Perhaps we should qualify that by saying .. not in SOUTH AFRICA

See Ultimate Reloader YouTube channel

Gavin Gear

But possible elsewhere ...

[janfred]

Right. Please place the link...

[oafpatroll]

Can be done at home, no.

Perhaps we should qualify that by saying .. not in SOUTH AFRICA

See Ultimate Reloader YouTube channel

Gavin Gear

But possible elsewhere ...

You ask a lot of questions for someone who has all the answers.

[Newton]

Right. Please place the link...

Ultimate Reloader

[Newton]

Can be done at home, no.

Perhaps we should qualify that by saying .. not in SOUTH AFRICA

See Ultimate Reloader YouTube channel

Gavin Gear

But possible elsewhere ...

You ask a lot of questions for someone who has all the answers.

Answers are like decisions
Not all are the correct ones ...

[janfred]

Right. Please place the link...

Ultimate Reloader

So, no pneumatic case forming? Not even in America?

How surprising...

[Brian]

I worked in hydraulics and pneumatics all my life. Owned my own medium sized hydraulic and pneumatic company for over 30 years.
Nothing is impossible with enough money. However, nowhere in the world can you buy an air compressor that delivers 30000 psi. Someone, somewhere might be able to build one if you have a very big chequebook. 30000psi hydraulics is only available in specialised laboratory equipment, again at a horendous price.
You might be able to build something like this for a few million rand, perhaps.

[oafpatroll]

I worked in hydraulics and pneumatics all my life. Owned my own medium sized hydraulic and pneumatic company for over 30 years.
Nothing is impossible with enough money. However, nowhere in the world can you buy an air compressor that delivers 30000 psi. Someone, somewhere might be able to build one if you have a very big chequebook. 30000psi hydraulics is only available in specialised laboratory equipment, again at a horendous price.
You might be able to build something like this for a few million rand, perhaps.

Killer of dreams!

[Brian]

I worked in hydraulics and pneumatics all my life. Owned my own medium sized hydraulic and pneumatic company for over 30 years.
Nothing is impossible with enough money. However, nowhere in the world can you buy an air compressor that delivers 30000 psi. Someone, somewhere might be able to build one if you have a very big chequebook. 30000psi hydraulics is only available in specialised laboratory equipment, again at a horendous price.
You might be able to build something like this for a few million rand, perhaps.

Killer of dreams!

😂😂Now I'm hurt. 😂😂