This would surely be some time prior to Fosberry's patent for the Paradox?? 1885?
1886 was the first H&H Paradox and the patent would have lasted 7? years and renewed once, so 14 years brings us to arounds 1900, surely this rifle is before then?
Most interesting - anyone got any ideas?

Whatever, well done for making the ammunition and shooting a wonderful part of history

Tony