Thread: 6.5 x 55 Arch Improved Load Data

I've got some of his books. I'll have a look. Old data may not be your best solution though as some of the older powders have had their recipes changed over the years, maybe only slightly though.
In what way does the Arch differ from a 6.5x55AI. Obviously the 30 deg shoulder rather than the 40 deg is different.
Keeping in mind that Ackley never actually Ackleyed the Swede.

In my 6.5x55bjai version I've always used WW760 with great success.