Thanks for all the replies. Thought that might be the problem but didn't realise that what seems a simple solution was available Leverluver- from what you're saying does that mean it might be unwise to use jacketed ammunition in the Kodiak? If I'm to check the internal diameter of the barrel groove ...

Hope some can assist with this. I've been reloading for a while on file calibres but new to lever actions. I have bought a Chiappa Kodiak .45-70 guide gun which is fab. I have been loading 405grn cast bullets for a while and am looking at working up some jacketed ones. As a first try I loaded up som...