Thanks for all that info guys. I don't have the rifle with me to check seating depth off the lands or magazine length as it (the rifle) is still with the Gunsmith. I will have to do all that later.

This info will certainly help me load up some rounds for him to check the feeding. Any aberations in regulation can no doubt be adjusted later.

FYI. The barrel is a pre-chambered Lothar Walther.