...Idea ....use .357 Mag chamber reamer to enlarge the original .351 barrel chamber Rim diameter from .410 to .440 (same depth)...
this will allow use of Starline 360 Dan Wesson brass for re-loading ammo as is except to trim length from 1.410 to 1.380"....... plus still being able to use the original .351 brass if any becomes available .....currently using rimless modified .223 / 5.56mm cases ...which do work ...but the 360DW Mag case would work better I think
any Model 07 Guru out there ?
D Lawrence
Houston