Another NZ shooter contacted me over inaccuracy and leading he is getting with 'commercial' bullets in his .303 Brit. I asked him to send me some to hardness test for him.
6.4BHN and the quality of casting was not ideal. That alloy is softer than I shoot in my .310 Cadet. No wonder the old Brit won't shoot them over 20gr H4227.
Cheers from New Zealand