11-07-2011, 02:29 AM
I had the same problems about 2 years ago when starting with the Grendal, in an Alexander Arms Overwatch upper, with the Shilen barrel.
It turned out the problem was two things, bullet seating depth and lack of shoulder set back. Bullet depth is easily taken care f with seating stem adjustment.
Additional shoulder setback was accomplished via trial and error method, of removing small amounts of metal from top surface of case holder, using fairly fine wet/dry sandpaper on a flat surface. I constantly checked sized cases with one of the Sheridan case gages, removing enough metal from case holder until cases would freely and consistantly enter the gage.
I figured it better to play with an inexpensive case holder vs an expensive die. I probably only removed a few thousands of an inch, but did no actual measurements, just made cases fit the gage and have had no problems since.
It turned out the problem was two things, bullet seating depth and lack of shoulder set back. Bullet depth is easily taken care f with seating stem adjustment.
Additional shoulder setback was accomplished via trial and error method, of removing small amounts of metal from top surface of case holder, using fairly fine wet/dry sandpaper on a flat surface. I constantly checked sized cases with one of the Sheridan case gages, removing enough metal from case holder until cases would freely and consistantly enter the gage.
I figured it better to play with an inexpensive case holder vs an expensive die. I probably only removed a few thousands of an inch, but did no actual measurements, just made cases fit the gage and have had no problems since.