hello all , I got this black powder gun 20+years ago (been a wall hanger) and have decided to put the musket back into service..its a 1864 Springfield that at some point became a conversion to a cartridge gun and then back, it has a numrich arms repro barrel , seems to be very "solid", took it apart cleaned it all up, but can't seem to find primers for it, the #11's the gunshop showed me are way too small and look more to fit the cap and ball revolvers and modern BP's, looking for the 'winged" musket caps any help appreciated,,thanks!