Ken,
What was Krieghoff's response when you asked for this information? While standing in Krieghoff International in Pa. a question came up about my 7x65R set of barrels. The same barrels in the thread "What can be done about vertical spead". This set of barrels was built and regulated in 1995. When the questions were asked, the serial number was entered into a computer and in 30 seconds I had a copy of the original test target with all the information requested. What factory ammo, what distance, iron sights or scope?

If your 375 H&H has the adjustable wedge it doesn't seem to matter what ammo they tested. Use what you like and adjust the barrels accordingly. But if you really want to know what your gun was originally regulated with call the sevice department and have a fax number ready. I'm sure you'll have the original target within minutes.

I first shot my 7x65R with Sellier & Bellot it was disappointing. I bought RWS 173 grain TIG same as the regulating target. It shot as poorly as the Sellier and Bellot. I adjusted the wedge for barrel spread and now both loads shoot well as far as horizontal plane goes. Right and left barrel hit the vetical axis on the same plane at 100 yards. Now if I could only get them a little closer togther top to bottom.