RePete, you are doing something wrong, as brass is not the main contributor to accuracy. It is a safety vessel and good brass, such as Lapua, is considered as fine tuning for winning shooters. Positive characteristics are the metallurgy, with brass being very hard in the head area, which Lapua has and soft in the neck for repeated reloading. Then there is case capacity and wall uniformity. Tops for Lapua there.
The majority of the world's top shooters in BR and other accuracy discilpines use Lapua, as it is a superior product. For shooters looking for consistent reloadable brass, go Lapua.
Talk to winners for advice.
Regards,
Peter Dobson
Hirsch Precison Inc.
Lapua in Canada