RE: Omega ?
Before you spend the money for the 25 ACP adapter you might want to try the Win 777 primers. I have had very good luck with them as they are easy to get out (less blowback in primer pocket) and drastically reduce the crud ring. Before the 777 primers came out I bought the Veri Flame adapter for my Omega and it seems to work about the same as the 777 primers ( it also uses a small rifle primers). Some who tried the 777 primers didn't have as good success with them as I have but they are worth a try. If you don't likethem you can always buy either the 25 ACP or the Vari Flame adapters.