Wasn't it Bromide?.In the tea, in England I believe.
That seems like a high psi load for an old Damascus gun,dontcha think?
Perhaps there was an 18+ grainer in the mix with the 17.4,17.6 & 17.8 's...those loads are pushing 10,000 ish,aren't they?.. though hard to tell with LUP
I don't load LUP recipes.They seem hot, never mind with a double tap of powder
franc