Hi,just seen your 66s posting....the fluted action was on the first pre-production model...looks like the 8-68 is very rare,and perhaps the pre-production action was in inventory,then used.Years ago i came across one in nz...but it actually had mauser 65 stamped on it!.In john speeds mauser book hes got mention of the pre production rifle.....it looks fantastic by the way! cheers Mark