Wow :haha: ,just looked on this section and was ready to type a post about my Ultra hi 45 flinter also..LOL.It was a kit my dad put together in the 70's..Remeber trying to shoot it back then with 440 ball and .010 patch but it was way to tight..Got it from him a few weeks back cleaned her up worked the trigger and sear a little to get rid of th 20 lb. something pull..Ordered a box of .433 balls,it has to be a better fit than what I have now, 15 or 18 thousandths patches should load well,,Lock even being made in Japan has a great spark with shortened english flints..When the balls come in I'll let all know how she shoots..Always wondered why it was marked a 45 instead of a 44 cal,which it probaly shoud be.Ray