So, where does small caliber end and medium caliber begin?
I tend to think the split is somewhere between 6.5mm and 7/mm. 6.5mm and below being "small" and 7mm and above being "medium."
I would put the change between 25 and 6.5. There is a large jump in max. bullet weight there-120 to 160. I think a cartridge that can use a 160 grain bullet is a medium deer+ cartridge.
