Depends on what you call antique. I have a Winchester 61 made in 1936 and a Remington 121 made in 1938. Do they qualify?
According to the BATF, a cartridge firearm made before 1899 is an antique.
My 45-70 Trapdoor left Springfield in 1883. Previously I was blind as a bat and needed really thick lenses to see, and even with corrective lenses I could not see a target beyond about 25 yards very well. I had cataract surgery in late January and early February, and can now see 20/20 with my right eye, about 20/30 with my left. Can't wait for some cooler weather to see how well I can do with my old Trapdoor.
Found this terrific old Winchester Model 1894, chambered for 30WCF last year. Made in 1895. I have only had it to the range once, pre-cataract surgery. Can't wait to take it to the range again.
This 44-40 Winchester Model 1892 left the factory in 1897. For my first few years in CAS it was my Main Match rifle and came to every match with me.
This 38-40 Winchester Model 1873 left the factory in 1887. It has not been to the range a whole lot, I need to remedy that once the weather gets a little bit cooler. I only shoot this one with Black Powder.
I know this is the rifle section, but this pair of Smith and Wesson New Model Number Threes comes with me to a CAS match about once a year. The blued one shipped in 1896, the nickel plated one shipped in 1882 and was refinished at the factory in 1965. Both are chambered for 44 Russian and only get shot with Black Powder.
Difficult to date this Merwin Hulbert Pocket Army since all the records burned up many years ago. This open top model was produced sometime between 1881 and 1883. 44-40, it only gets fired with Black Power too.
A fairly recent acquisition is this Remington Model 1875. Probably left the factory sometime around 1875. Chambered for 44-40. This model often shot very badly because the chamber throats were way oversized for 44-40 bullets.
I was actually very happy that all the bullets went through the targets pointy end first and did not tumble and key hole the targets. Yup, just 15 feet, but I was happy they all stayed on the paper and none key holed.