Before normalization, the probability exists that about every chamber was a slight bit different. Early on in many cases the end user was supplied with every thing he needed to use the tool. By the time that the general public could afford a longarm due to mechanization, many of the hunters may have not really known the exact chambering of their multipurpose longarm and depended on an outfitter or supply house as an ammo source. Current there's a 2 or 3 part segment in GGCA publication #39 of Waidmannsheil dealing with German cartridges based on the 360 BPE by Mike Ford that suggests that certain current ammo is designed to span the varying bullet diameter dimensions.
Kind Regards,
Raimey
rse
