Just wondering if you have come across this - and/or know its origin. I am busy reloading some .45acp stuff and have had three cases with this headstamp - and will they accept a new primer?? NOPE, they will not. Even with adding some chamfer it is no go.
Because I am loading practice/plinking stuff I am mixing headstamps from the large bucket of brass ...... but this one surprises me with its reluctance to accept a primer... others just have a slightly different assorted ''feel'' but reprime fine.