The DEVA has and used the original 26" DWM test barrel Gehmann used when he developed his proprietary cartridge and loads in the 1950s. When they checked a recent 7x66 SE factory load (post-DWM, 1980s) supplied by Gehmann (owner of the vom Hofe trademark), they got merely 3068 fps instead of the 3445 fps advertised by Gehmann on the package label. Pressure was just a modest 3050 bar instead of the CIP maximum 4400 bar.