Some other considerations;

1. Make the jacket thick as possible depending on material costs

2. The projie even made to the Mk VII spec's may not have the same ballistic properties of the original round Why - simple we do not use cordite any more and the differential in burn rates could or may send different harmonics along the barrel maybe not enough at say 100m but a 600m it could be a different POI than whats on the sight ladder so more range time to get the correct elev thats gotta be good for us all!

3. I would make them a FBHPSB at .312 as these girls are getting older the .312" obturates better as I found with two other types the 170gn FBHPSB Taipans and the 150gn Hornadys FBSPSB both at .312" and shot well out of all the ones I use at the range

4. Cost/round like all things we like they are getting more expensive so cost and freight come into play especially when you are interstate or o/seas

5. And I suppose it is coming as those that cuddle trees demand we have lead free projectiles as we are polluting the earth may be another consideration for future production

6. Why don't you contact Ian Skennertonicon or Brian Labudda or even try the Lithgowicon Museum and see what they can do for you some one will have something