scatterbrain
New member
A drill bit that chamfers for wood screws does a good job on brass to chamfer the rim, I use one, I also have an RCBS die that removes the crimp, works also.
As I understand the OP, he can get the primer in, just not flush. The pocket has a radius in the corners that is not as deep as the pocket, that causes the primer edge to touch before the primer is set deep enough. My primer pocket depth reamer cuts the edge to .121", the CCI primers that I use are .123", therefore I set the primer to minus .003 below rim to get the proper "set" and below rim for safety. The reamer really doesn't make the pocket deeper, just removes the radius of the corners.
As I understand the OP, he can get the primer in, just not flush. The pocket has a radius in the corners that is not as deep as the pocket, that causes the primer edge to touch before the primer is set deep enough. My primer pocket depth reamer cuts the edge to .121", the CCI primers that I use are .123", therefore I set the primer to minus .003 below rim to get the proper "set" and below rim for safety. The reamer really doesn't make the pocket deeper, just removes the radius of the corners.