Well... I understand why you ask becauser sooo much old ammo is out there in all different styles, weight especially in 8x57 with or without rim . However I can tell you this much as I have been collecting old ammunition for both my mausers for years in the "S .323cal" & "Normal ,318" and ofcouse I have incountered much over the years in both rimmed and rimless. The absolutly most commen found ammo is without a doubt the 8x57 198grain bullet for both rimmed and rimless. I have a few boxes for the 14.7gram( 227grain) from DWM and 226grain from Kynochs. I have only a few rimmed 8x57 loose rounds with 227grain bullets. I have never seen a Kynoch box with rimmed 8x57..they might be there somewhere, but they most be rare. So seen from that point of view, I could presume that most doublerifle ammo used to regulate doublerifles in was for the 198grain.