Eagleyes & Homer,
I've since found out that Dave Commons has taken over Cast Bullet Engineering (Moulds), if there was ever a 'cast bullet enthusiast' then it's certainly Dave!!!
He's a very modest bloke who doesn't at all brag about his abilities - especially his shooting, leaves the rest of us mugs WAY behind!
I've placed a "no rush" order with him for a 400gn+ .424" mould & sizer to suit the Jeffery.
But following Homer's advice I will get my CZ's bore size verified before I send off my payment.
I've emailed CZ USA for bore size/twist rate - no reply whatsoever!
I did have a feed issue with the CZ550,that is another story altogether!

So please all us 'big bore' fans out there give Dave a bit of business, he really puts everything into all that he does.
All the very best to you Dave & your family.
From the NQ BGR crew
93x64mm