Ah, I found it:

400 Express:

3,1 grams of Black Powder - 47.8 grains

16.2 gram bullet - 250 grain

460 m/s - velocity - about 1500 ft/s

Eo. - 1700 J.

http://www.naboje.org/en/node/12539#

I've been trying to load this beast-

https://www.doublegunshop.com/forums/ubb...true#Post547878


Your demon may be in the lot here:

http://www.naboje.org/en/taxonomy/term/18

http://www.naboje.org/en/node/2613

Like this one but the powder charge is only 3 grammes. Your load data looks like 4 grammes of black dust.


Cheers,

Raimey
rse