GT,
I don't know how good your German is, but the answer to your questions are in the blueprint book you just bought... on Page 1 labeled "Der Lauf"
Each Groove width was 2.5mm plus 0.10mm
Groove diameter of the bore was 9.1mm plus 0.01mm or minus 0.03mm
Land diameter of the bore was 8.85mm plus 0.04mm or minus 0.03mm
there was a 6 groove bore with a right hand twist was one turn in 250mm (10 inches) plus or minus 2mm
<a href="http://forums.lugerforum.com/lfupload/barrel_measurements_info.jpg" target="_fullview"><img src="http://forums.lugerforum.com/lfupload/barrel_measurements_info.jpg" width="400" alt="Click for fullsize image" /></a>
Need anything else?
