The problem is when the info in the books is provable to be wrong . " Facts " written in many books - .318 groove bore [ never was ] , charger guides riveted on [ no through hole so mechanically not possible { I have installed 10's of 1000's of rivets of many types in my life om everything from airplane wings , race car bodies and truck frames } , and I knocked one off and you could clearly see the plug weld , plus if you look at enough rifles you can see some with a little flame cut on the edge of the ground down plug weld { you guys should check your rifles for it ] , the S on the receiver means it was a Gew-88 S [ not true ] , only the later .323 Z barrels were used for S ammo [ even though I have many real Gew-88 S rifles with the older .3208 barrel ]. The 05 notch was cut for the " longer " S ammo [ S ammo is shorter and the notch is clearly cut to clear the older P-88 ammo and that is stated in German manuals ] , the dot stamp means reinforced barrel [ German manuals say it was the new barrel nut solder , I have rifles with the original thin matching barrels and no dot , plus I only have jacket removal problems with no dot rifles ] . Since I know what the markings mean , I know original German parts , the upgrades that match the markings and so on . Things just said that are wrong . The Gew-88 and the Gew-98 have the exact same twist rate , I have measured many . From 1896 1/2 the Gew-88 and the Gew-98 used the same exact spec barrels . How many have you measured , and do you even know how ? Most German Gew-88 rifles spent their whole life as made b[ the most common is still the plain Gew-88 ] . Many were used from their birth right though WWI . After the first ammo / powder problem was solved they were fine . There is no reports from WWI of a failure rate any greater the the Gew-98 . They were in German service from 1889 to 1918 , almost 30 years , not too short a life . I have spent countless hours with a friend who has all the original manual and document from Germany and a degree in imperial German language . I have compared all my 100 plus rifles [ plus many others ] with my mechanical skills to his documents . I have disassembled all, cut up some . So all my info comes from original document , a large amount of real rifles and ammo, and hands on measuring . Exactly how you said it should .