I'm not saying how many guns I have, but I DO have three muzzleloading rifles and a handgun. Having others that are BP-shooters, but NOT muzzleloaders, and even more that are not for discussion here, means that I have many choices of what to and and when.
Like the other posters here who live in UK, we are pretty much limited by law to the number of guns we can actually possess and shoot - it's no use saying any differently. Local restrictions can, and frequently are, inflicted on legal gun-ownership by Chief Constables (CC) who do not share our love for history and the guns that made it all happen. So although, in theory, there is no limit to the number of guns you might have, the CC might impose a 'local exigency' that requires you to build a purpose-made 'gun-room' to house your growing collection. You may not have the space or the inclination to do so, let alone the money, so your non-conformity with the CC's wishes effectively limits the size of your 'collection'. Here in UK, the words 'gun collection' or 'gun collector' ring all kinds of alarm bells in the office of the CC's 'dogs' - the county police HQ Firearms and Explosives licensing department.
We can easily walk into one of the very many specialist gun or militaria stores and walk out with ANY genuine antique firearm ever made, so long as it is a muzzleloader, or of a type for which ammunition is no longer made, if it is an unmentionable.
However, if we want to shoot it, then that, friends, is a kettle of a totally different blanket.