LRF,
The 7x57 case( including 7x57R) is based on the M93 case, which is .473" head diameter, instead of the M88 case( 8x57/8x57IR/IRS) which is .468"(both dims. max). Most European cases follow this, but American cases are usually made 06 size( incl. 6.5x55). You might keep this in mind if you intend to use European cases.
Mike
I am and will, thanks. Its one of the reasons it is nice to have a few different cases when chambering any rifle. However the COVID is making that a challenge.
There is a small local gunshow this weekend and of course the big Sioux Falls gunshow next weekend. Since I am immune to the sickness I am planning on attending both if possible. 7x57R is n-#1 on the look for list.
