Wthanks for the posts, it is interesting. Questions I have are:

1) how do you degrease the cores? I suspect it is a commercial degreaser/cleaner but is it an automotive brake/carb cleaner or more of a household product?

2) do you do degrease or otherwise clean the jackets before use?

3) have you tried bonding the core to the jacket? If so, how did it work?

4) do you do other calibers or just .224"?

5) WHY did you post this? It gives me the urge to take this up on my own and I don't need another expensive hobby to take my time and money. I have enough that I don't pursue as much as necessary.