there is something similar in a thread on www.terminal balistics definately .303 parent case necked up to larger...not entirely sure if its .38 or 338 but will give you some idea anyway.
Type: Posts; User: Micky Duck
there is something similar in a thread on www.terminal balistics definately .303 parent case necked up to larger...not entirely sure if its .38 or 338 but will give you some idea anyway.