A coned breech will be used. Finishing the breech in this manner facilitates indexing the barrel, as the barrel can be rotated to any position , without requiring new extractor cuts to be made.
A straight cut cone, pictured below is a cone from a Time Precision. Since it is a Time it has no extracter cuts.
A picture of a coned barrel with a rimfire case. This shows the amount of metal supporting the case.
Indexing will use this rail fixture. Note that it has my Suhl barreled action being mounted in a barrel block. A barrel block allows the whole gun to be rotated to multiple points of rotation.
