Thank you Daryl,
I have read the 12gaFH thread and Ed did a lot of work with the 12ga with impressive results.
Difference is that we have to keep everything under the CIP's maximum pressure for the 12ga (under 1050 bar) so that they could be used by anyone with an off the shelve shotgun.

Lefteris
www.europeancartridgeunlimited.com