After much searching and head scratching I finally broke down and ordered the .280 AI reamer and gauges. it seems without moving out a big lathe at home it's not possible to get at the cutter grinder to actually use it . Why dad put the big Holbrook right up against it is a question that will never be answered. So the idea to make my own reamer ground to a halt due to this non access problem.
So now the wait begins and I hate waiting for packages
Also am considering getting a new stock for it seeing as how the original has been so sanded. Someone previously sanded the chequering from the fore stock which has made it even slimmer than it was and should be. Just spoke with Mr Knibbs and yes he has some in stock. Now which style to get .