Cordite Conversions

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Cordite Conversions

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https://forums.accuratereloading.com/eve/forums/a/tpc/f/760101804/m/4961064602

10 December 2014, 21:34

MJines

Cordite Conversions

I stumbled upon this chart in African Dangerous Game Cartridges by Pierre van der Walt today (pg. 221). The chart does not have attribution so I cannot cite a source for or vouch for the chart's origin. I have seen the conversion ratio for RL15 before and it was as listed below (I believe that was in a Ross Seyfried article), but had not seen conversion factors for other powders.

IMR7828 = 1.40
RL22 = 1.37
S-385 = 1.35
IMR4831 = 1.33
IMR4350 = 1.25
S-365 = 1.24
RL15 = 1.19
S-355 = 1.17

Useful information for developing regulating loads for older rifles with modern powders.

10 December 2014, 21:50

cal pappas

Valuable info. Thanks, Mike.
I needed the Somchem conversions!
Cal
PS. I've been working on a conversion from Black to Blue Dot for the bore rifles. I believe it is in my new book and I will be fine tuning it this coming shooting season.

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11 December 2014, 02:27

MJines

Well damn, I must have missed that. I know he talks about the RL15 conversion factor in his book, but I did not recall seeing the factors listed for other powders. Where is it in the 3rd Edition?

Rusty
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11 December 2014, 17:49

Zephyr

quote:
Originally posted by MJines:
Well damn, I must have missed that. I know he talks about the RL15 conversion factor in his book, but I did not recall seeing the factors listed for other powders. Where is it in the 3rd Edition?

Mike I'm on the road and wont be home till Friday, I know he has conversions for RL15 and I believe 4831 when I get home I will try to find it.