A word of advice if you live in the Republic of Ireland.
DO NOT try to obtain any black powder or ball.
1. Black powder is a prohibited substance in the Republic, and unauthorised possession of it is an offence under the Prevention for Terrorism Acts. Only commercial users - quarrymen etc - are authorised to possess it under the auspices of the 1888 Explosives Act. Shooting BP firearms in the Republic is no longer possible, even for the few re-enactors.
2. Likewise, possession of ball used as ammunition is illegal. Possession of ammunition components, ANY kind of powder, percussion caps, shot etc are prohibited under the Firearms Act SIs. Only around forty persons, all members of the Midlands National Shooting Centre at Tullaghmore, are individually 'licenced' to carry out reloading of cartridge-firing firearms in the entire country.
TMK, nobody in the Republic is authorised to shoot a BP firearm.
Furthermore, attempting to shoot this little antique in both the Republic and Northern Ireland without a firearms certificate will get you a possible five years jail time. And you will NEVER get a firearms certificate for this gun in the Republic - if you are a British citizen, living in the North, then you will have to join a club, serve your probie time, and get an FAC, like the rest of us. Oh, and an explosives license, too.