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#548341 - 06/14/19 09:38 PM J. Schaschl Ferlach Biks [Re: pwm]
ellenbr Offline
Sidelock
***

Registered: 08/10/07
Posts: 8709
Loc: North Alabama
Originally Posted By: pwm
.........what we know: is it a real 10mm /400 and it have a paper thin neck

...........the paper thin brass case is typical for the early express rounds and the 10x60 R 400 comes from one. this is not a 450 basic case necked down.......


.........old chambers are made different than we do it now. I have casting were the chamber ends with the case mouth. no free bore, nothing, the lead bullet engrave into the rifling when loaded.....


PWM, if you drop in from time to time, can you clarify on the neck? Is there a thin neck from the 400 bore transitioning to the rifling? I ask this because I am working with a similar chamber which has a constant chamber diameter for a length of 61mm with the diameter larger than that of the bullet. Then from 61mm to 67mm there is a transition / necking down to 400 kaliber.

Cheers,

Raimey
rse

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#549317 - 06/29/19 09:48 AM Re: J. Schaschl Ferlach Biks [Re: James M]
ellenbr Offline
Sidelock
***

Registered: 08/10/07
Posts: 8709
Loc: North Alabama
For the 1 or 2 still taggin' along, Oxiclean is the ticket to removing the undesirables from the cases. Although I haven't balanced the equations, water seems to be the catalyst? Anyway, natrium perborate or sodium perborate is the key ingredient.


https://www.youtube.com/watch?v=ANeHbCjGIwM

Cheers,

Raimey
rse

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#550770 - 07/15/19 08:24 PM Re: J. Schaschl Ferlach Biks [Re: James M]
Tinker Offline
Sidelock
**

Registered: 01/09/05
Posts: 862
Loc: Northern NV
Thanks Rainey for the brass cleaning tip.

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#550811 - 07/16/19 09:57 AM Re: J. Schaschl Ferlach Biks [Re: James M]
ellenbr Offline
Sidelock
***

Registered: 08/10/07
Posts: 8709
Loc: North Alabama
No worries Tinker & glad to pass it on. Now I am not sure how much to add or if there is a concentrated version of Oxiclean? I 1st purchased a small spray bottle but I am not sure as to the concentration. But the concoction will foam up residue from the cases......

Cheers,

Raimey
rse

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#550904 - 07/17/19 10:22 AM Re: J. Schaschl Ferlach Biks [Re: ellenbr]
Tinker Offline
Sidelock
**

Registered: 01/09/05
Posts: 862
Loc: Northern NV
Got it.

I'll look at the market shelves for whatever assortment of forms of the brand I can find.
I have some brass here that I'll run with this sauce.

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#550958 - 07/17/19 07:59 PM Re: J. Schaschl Ferlach Biks [Re: James M]
ellenbr Offline
Sidelock
***

Registered: 08/10/07
Posts: 8709
Loc: North Alabama
One other think Tinker & that is that the reaction may be more volatile with bona fide black powder instead of the synthetic or psuedo powders with a deflagration origin. For now I have only tried it w/ Pyrodex RS and considering that composition has sulfur that mixture is some more corrosive.

Cheers,

Raimey
rse

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#551580 - 07/26/19 08:34 AM Re: J. Schaschl Ferlach Biks [Re: James M]
ellenbr Offline
Sidelock
***

Registered: 08/10/07
Posts: 8709
Loc: North Alabama
Seems that in order to get the desired effect, just add more concentrated Oxiclean. One issue I am having is w/ stuck cases after firing. Said stuck cases have to be tapped out w/ a brass rod.

Cheers,

Raimey
rse

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