1913 dwm

[DonVoigt]

Originally Posted by 4 Scale

I don't know enough about Imperials to contribute much to this thread. But, doesn't the barrel look like .30 Luger? I counted the coils in my Portuguese 1906 pattern chambered in .30 Luger, and it has 15 coils on the mainspring which is about what I count here. The Portuguese shoots perfectly and looks fine on the tape test (mainspring is OK). So I'm thinking he's OK to shoot this if .30 Luger?

I don't think so, the coils seem awfully far apart to me; but I've been wrong before- .
Here is my Brazilian frame, with 15-16 coils, just looks closer than the picture above; but for a 7,65mm it is probably fine- after all the leaf spring of the 1900 had much less tension .

Here is the spring chart again, for those who have not seen it.

Leed can always mic the diameter of the wire if he wants to get into the "weeds" of springs.