Rick, the muzzle dimension of the 12" bbl measure 0.57" and I have not considered modifying the contour. I am used to shooting 90gr jacketted bullets with 4.5gr of unique in my 7" shooter. I am going to load a few cartridges at 5gr of unique and try that with the long bbl. I'm not sure how high of a load I can go with .30 luger and a 90gr jacketted slug. thanks for the comments.
|