I discovered with a chamber cast that my Eddy M1917 (1918 date 5-groove barrel) has almost no "throat" the lands start right at the edge of the case mouth. Cast have to be under 0.311" or I have problems. I usually shoot 175 grain Sierra MK's for jacketed and it is pretty accurate with these. I did shoot some HXP surplus at a JC Garandicon match and they did fine.

Wineman