Not a tradition, but a generally adopted G. Roth Patent primer pocket design, mostly for the 5mm (.199") Berdan Primer, but also used in .217" by Czechoslovakia and Poland, and 8mm Kropatschek and .303 British by Portugal from 1900 to 1937. Countries using Steyr Mannlichers ( Netherlands, Romania and Greece, ) also used the 5mm Roth Primer pocket.
The single flashhole central to anvil design only disappeared during and soon after WWII from the world scene, even though RWS still made .199" rifle primers into the 1980s…I use them on 1930s 8x50R Circle M for Bulgaria.and Dutch 6.5x53R cases…
The rationale of the system was that it gave a concentrated flash into the center of the powder charge, and was able to be easily decapped for reloading in the economy-minded small armies of the times for target and training practice, a practice carried over from BP days. WWI ended the practice in Major Armies, but it continued in the smaller countries noted until WWII.