May I ask anybody having these 2 cartridges in his collection to post the picture next to each other? (for comparison). Thank you Tomas
Th 50-70 is slightly necked starting about 2/3rds up the case and has a 16.55mm rim dia. vs 16mm rim dia. on the12.7 which is on the right here. Also different bullet shapes.
hope this is of use
Thanks a lot Pete!