I have a old box of Winchester 140 grain for my 264 win Mag that are two diameter. Factory loads.
I also traded for a box of old Nosler Partitions 140 grain.264 diameter bullets. I loaded some up for my late season Colorado elk hunt. Those bullets shoot spectacular.
As a matter of fact I would like to buy some more if anyone has any for sale.
I have a old Sako .264 Win Mag that loooooves the two diameter 140 Partitions.