02-24-2022, 01:15 AM
DT,
First thoughts are that the chamber has been reamed too wide.
It looks like the case is expanding/fireforming to the chamber walls forward of where the case is thick, as it should. The web at the base is too thick to expand and supports itself, as it should. What the photos show is the shape of the chambers. The Lilja chamber is noticeably wider and likely too wide. Those cases won't last long before splitting.
We are looking at axial headspace here. While longitudinal headspace (from base to shoulder) might be fine, the difference between the ID of the chamber and OD of the case is also headspace. Too much and the case ruptures, either immediately or eventually. Your unfired cases and Forster die are more than likely perfectly fine because the coincidence of both being out is unlikely, plus they work in the other gun. This is pointing to the Lilja chamber being too wide.
I would send them the photos and ask their advice. Their customer service is excellent.
SAAMI case dimensions are found here;
[ATTACH=CONFIG]18674[/ATTACH]
First thoughts are that the chamber has been reamed too wide.
It looks like the case is expanding/fireforming to the chamber walls forward of where the case is thick, as it should. The web at the base is too thick to expand and supports itself, as it should. What the photos show is the shape of the chambers. The Lilja chamber is noticeably wider and likely too wide. Those cases won't last long before splitting.
We are looking at axial headspace here. While longitudinal headspace (from base to shoulder) might be fine, the difference between the ID of the chamber and OD of the case is also headspace. Too much and the case ruptures, either immediately or eventually. Your unfired cases and Forster die are more than likely perfectly fine because the coincidence of both being out is unlikely, plus they work in the other gun. This is pointing to the Lilja chamber being too wide.
I would send them the photos and ask their advice. Their customer service is excellent.
SAAMI case dimensions are found here;
[ATTACH=CONFIG]18674[/ATTACH]