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fraserdouble
.224 member


Reged: 06/06/06
Posts: 46
Loc: Australia
Cordite equivalent - WARNING re IMR3031
      25/02/09 10:27 PM

There are some really usefull nitro powder equivalents for cordite formulae around, however does any member have similar formula for IMR 4198. They are good for providing approximate loads for old Brit ctgs. As always start at least 10% below and work up.

Other formulae that I am aware of are as follows.
1.10x IMR 3031 = cordite
1.19x RL15 = cordite
1.31x IMR 4831 = cordite
40-44% IMR 4198 = black powder

Based on the relative burning rates I would imagine that 4198 is close to 1.
Does anyone have better data than this guess?
Fraser


(Added a comment regarding a warning re using IMR3031)

Edited by NitroX (29/06/10 08:54 PM)

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Entire topic
Subject Posted by Posted on
* Cordite equivalent - WARNING re IMR3031 fraserdouble 25/02/09 10:27 PM
. * * Re: Cordite equivalent grandveneur   26/02/09 03:11 AM
. * * Re: Cordite equivalent Marrakai   26/02/09 10:45 PM
. * * Re: Cordite equivalent bonanza   29/06/10 09:35 PM
. * * Re: Cordite equivalent DarylS   30/06/10 12:45 AM
. * * Re: Cordite equivalent grandveneur   30/06/10 06:40 PM
. * * Re: Cordite equivalent mauserand9mm   01/07/10 10:22 AM
. * * Re: Cordite equivalent grandveneur   01/07/10 03:23 PM
. * * Re: Cordite equivalent grandveneur   29/06/10 06:17 PM
. * * Re: Cordite equivalent Ron_Vella   29/06/10 08:47 PM
. * * Re: Cordite equivalent beleg2   29/06/10 08:59 PM
. * * Re: Cordite equivalent - WARNING re IMR3031 NitroXAdministrator   29/06/10 08:55 PM
. * * Re: Cordite equivalent doubleriflenut   26/02/09 02:53 AM

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