While loading new Lapua brass in .338 LM, about half of a new box of 100 would not slide easily into my RCBS #14 shell holder. I can force them in but if I do that then removing after bullet seating is a genuine pain. This is brand new brass from Finland purchased from Brownells.
A phone call and 3 days later I received my second box of 100 and experiencing similar issue. A quick glance at the box label revealed same "Lot" number on both boxes.
This problem gets worse as now I have tested the brass in my #14 shell holder for my Hornady Lock-N-Load Case Prep Center and NONE of the brass will fit into the Hornady shell holder.
A quick check with the caliper indicates a difference of .002 on the slot dimension in the profile in front of the case head. The ones that fit easy into the Shellholder are .5075 and the ones that get stuck are .5095, whereas the sholder profile above the slot in the RCBS #14 Shellholder is .5095.
This seems to be a Quality Control matter on the manufacturing side, but this is my first experience with this caliber and wanted to tap into some of the experiences in this community for some insight before I plan next steps.
A Little Corn-fused
A phone call and 3 days later I received my second box of 100 and experiencing similar issue. A quick glance at the box label revealed same "Lot" number on both boxes.
This problem gets worse as now I have tested the brass in my #14 shell holder for my Hornady Lock-N-Load Case Prep Center and NONE of the brass will fit into the Hornady shell holder.
A quick check with the caliper indicates a difference of .002 on the slot dimension in the profile in front of the case head. The ones that fit easy into the Shellholder are .5075 and the ones that get stuck are .5095, whereas the sholder profile above the slot in the RCBS #14 Shellholder is .5095.
This seems to be a Quality Control matter on the manufacturing side, but this is my first experience with this caliber and wanted to tap into some of the experiences in this community for some insight before I plan next steps.
A Little Corn-fused