Re: 30-378 chamber specs needed.
The rifle will be used for target shooting, hopefully at longer ranges than my 300 ultramag. I´m looking to get to 2000 meters or more this time. Feeling quite optimystic here. The 30-378 just seems to be the only 30 cal cartridge that I know of that can I can drive hard enough to achieve my goal. Didnt look any further tough, but will do now.
Yes, 1/8 twist.
The action is my own design with 5 set interrupted threads (15 total). Single shot. Whole rifle weighs in at 22 lbs, 43 inches long.
Why 30-45 degree shoulder instead of the double radius one on the original?