Gunner- Saw your posts about your 6x45mm M96, have been thinking a little about this cartridge and taking the plunge on a custom barrel or two. I've read some stuff about it but was wondering if it is really as easy as necking up the 5.56 case to 6mm? Do you need to anneal the case neck? What's been the average life a case for reloading, the same or worse than 5.56? Any trouble feeding through a standard USGI mag? Tried it in a PMag?