Has anyone in the UK actually managed to get a gun using the info here? I can't really find any source other than what OP linked to substantiate that getting a black powder license is as simple as going to a "historical gun shop", getting an antique LARP gun, and then mentioning to the police that you own an antique LARP gun therefore should get a black powder license. And then loading up a cartridge with the black powder you were given. Most stuff I found suggests you need to join a shooting club of some kind - and the only ones near me have a 3-month probationary period before they can assist with anything like this.
I wish I could be a fucking American. Holy shit.
I call bullshit on all of it. I don't think you can even legally buy modern reproductions of antique guns? As far as I know you can only buy guns made before a certain year as antique guns. Also on the topic of getting a black powder license, I imagine it would be on the same level of difficulty of getting a shotgun certificate, if not a firearms certificate (shotgun certificate being somewhat easier to get compared to a firearms certificate), so I do not see why someone wouldn't just do that at that point.
For the sake of a hypothetical discussion about firearms laws, here are some (legal, that do not contain explicit instructions on how to do anything and are basically news articles) links, keeping in mind that as far as I know you are simply someone interested in the discussion of firearms law without having any intention to acquire a gun in real life.
There appears to have been a recent drastic rise in the number of ‘slam guns’ (pipe shotguns) being seized and used in the UK. Gang paralysed boy, 13, with homemade gun for straying on …
homemadeguns.wordpress.com
A break open .22 cal air pistol illegally modified to fire .22lr ammunition. The simple adaption usually involves the chamber end of the barrel being drilled slightly to accept either a round of .2…
homemadeguns.wordpress.com
Improvised ammunition made by combining a .22 power charge with a molded .22 lead bullet. Keeping on the hardware store theme, above are examples of nail guns adapted into single shot .22 rifles wh…
homemadeguns.wordpress.com
Simple hardware store zip guns seized by police in Kazakhstan. With this design a finger is used to flip the bolt out of its slot to fire, in place of a typical trigger. Nail gun blank power charge…
homemadeguns.wordpress.com
P.A. Luty has also wrote books about this topic, as well as the TM 31-210 book writing about it, but those would be illegal to view, so make sure not to look for instructions about this stuff if you decide to delve deeper into this interesting topic that I only have an academic interest in.