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Quote: 12,57mm ie: .495" (12.573mm) might be close enough (in the average chambers)to allow .45 basic brass to be used, which is nominally .500" at the base. The rims need to be turned off, of course, and new extractor groove cut - simple stuff with a small lathe, along with the necking necessary - plenty of dies available for that - even .416 Rem dies would probably work as forming dies and the seater might work as a final sizing die. Measurements must be taken to see for sure. It may need polishing or reaming in the neck area. .68mm is 2.68"(6.81mm) would be easily made from the basic brass - if the chamber allowed the slightly larger diameter- which is likely. A person should measure .416 Rem brass in front of the belt. Belt needs to be cut off and rim cut to desired diameter. 10.75mm - .423" bullets might be a problem nowadays, but a hard cast bullet 350gr. to 400gr. at up to 2,200fps would be decisive. |