Part of collecting old rifles must surely be the pleasure of shooting those that are over 100 years since manufacture. My oldest "working rifle" is an 1870 - .577 Snider, a Swedish rolling block 12.7x44mm, 1876 Alex Henry 577/450 and even the old 1900 BSA 303 gets a lot of use with cast boolits.
Pristine bore on my 1874 Swedish Rolling block
1896 Martini Enfield and 1900 BSA LE with 1904 vintage folding range sight