Sorry to go OT all, ScottG, yes CenturyAI have marked the pistol as being 9x18 on import, is this incorrect? probably, but are the Makarov pistols chambered for 9mm Makarov or 9x18??
9x18 is a higher pressure round, smaller projjie that would rattle down the barrel of the Mak. How is the accuracy of the pistol? If you measure the bullets on your ammo; 9.02mm= 9x18 while 9.27=Mak, A Mak spec barrel has a groove diameter of 9.27 while the '18 a 9.02mm
The ammo - I don't know, but as far sa I am aware the 2 are not strictly interchangeable. might be a case of the 'Russian Cartridge Plants Association' not subscribing to US (SAAMI) or Euro (CIP) specs.