i bought a cap and ball single shot pistol .45 from a guy on HPA a while back. The .45 cal ball slides down the barrel with no effort so of course i put a patch in before the ball. I bought another pistol almost like it but a shorter barrel from another member here on HPA. But this one i cant put the ball down the barrel just by itself, it says it is a firing model. Neither of them were shot before i got them. The one that i cant put ball down by itself i still havent shot because i dont know why the .45 cal ball wont go down. any of you guys help me on this?