Here is a link to many 10mm ammo test videos...I think most are DRSJR1969 (he is a member here)
https://video.search.yahoo.com/video/play?p=10mm+ammo+chrono+test&vid=56f8752c953556c2b1a40dde007e75ea&turl=https%3A%2F%2Ftse4.mm.bing.net%2Fth%3Fid%3DOVP.Vde18fc006564398407b10a508dd3615d%26pid%3D15.1%26h%3D225%26w%3D300%26c%3D7%26rs%3D1&rurl=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DSycE87lPBFQ&tit=10mm+ammo+test+chronograph+stats+%231Glock+20&c=2&h=225&w=300&l=386&sigr=11b03u36c&sigt=11bcgkb89&sigi=132cdl5ji&ct=p&age=1281232344&fr2=p%3As%2Cv%3Av&fr=yfp-hrtab-901&tt=b (https://video.search.yahoo.com/video/play?p=10mm+ammo+chrono+test&vid=56f8752c953556c2b1a40dde007e75ea&turl=https%3A%2F%2Ftse4.mm.bing.net%2Fth%3Fid%3DOVP.Vde18fc006564398407b10a508dd3615d%26pid%3D15.1%26h%3D225%26w%3D300%26c%3D7%26rs%3D1&rurl=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DSycE87lPBFQ&tit=10mm+ammo+test+chronograph+stats+%231Glock+20&c=2&h=225&w=300&l=386&sigr=11b03u36c&sigt=11bcgkb89&sigi=132cdl5ji&ct=p&age=1281232344&fr2=p%3As%2Cv%3Av&fr=yfp-hrtab-901&tt=b)
Thank you Shadow!