Apologies for the lengthy title but RUSI would mean nothing to many.
Whilst Yuku was down I amused my sad self by going through some annual reports of the Institute and found some items worth reading. They lie amongst many equally fascinating articles of, perhaps, less relevance but no less worth reading such as circular battleships or driving punkahs.. A standard feature is the almost painful efforts by questioners to avoid rudeness to the authors and each other. Occasionally the politeness is palpably strained, but never rude.
On page 903 is The New Military Rifle which looks at the .402 Enfield-Martini.
On page 951 Revolvers and Their Use with excellent plans of period revolvers and double barrelled pistols and cut away ammunition.
On page 39 is Description of Martini Magazine Repeating Rifles, with a good enough plan to make your own if you have the skill.
On Page 603 Recent Inventions in Gunpowder and Other Explosives with some fascination background on the end of the gunpowder period and a make up of a Swiss gunpowder pellet for the 7,5mm round that may give some insight into the first Lee-Metford round.
On page 356 is Rifles and Rifling at the Martini period.
On page 195 is Some Special Features in Large and Small Grain Powders which may give us some thought on the performance of our present powder qualities and grain size choices.
Each of these publications includes so much more worthy of reading but I will spare you their contents pages and assure that reading them is well worth the trouble. I have exhausted archive.com but I am now going through Google books for more.