Hi Every one I will be getting a 310 Cadet Martini action rifle soon. I am looking to use it as an action to build a Varmint/ target rifle with. I like 6.5 mm as a bullet size. What Rimmed cartridge would be suitable for this? Options I have looked at include. 32-40, 222, 5.6 x 50R Magnum, 6,5 x 57R & 30-30 all in sizes given or wildcat to 6.5 mm. At this stage I am leaning toward 30-30 possibly in Arkley Improved either in 30 cal or 6.5 mm.