I received the cerrosafe from Brownells today and just made a cast of the chamber in my Romano Spencer. Now what to do with the info. I am not very knowledgeable on this sort of thing so I ask for anyones help.
Here are the measurements as far as length only. Once I removed the cast I measured it from where the rim starts to where the chamber slopes into the rifling and got a measurement of 1.170. This is what Larry Romano told me his reamer was. Add the case rim of .063 and I come up with a cartridge length of 1.233 max. I am using Dixie 50-70 cases and trimming them down. Am I calculating this right or do I need to leave some room for case expansion?
Thanks for any help