22 Ammunition Vlocities

[horseman2]

CZ 452 American Ruger Mark III

Brand Box Velocity Range for 5 shots

CCI MiniMag HP 1260 1241 - 1264 997 - 1050
CCI MiniMag RN 1235 1159 - 1200 950 - 978
CCI Velocitor 1450 1242 - 1308 845 - 1017
CCI Standard 1080 1018 - 1042 876 - 902
CCI Select 1200 1147 - 1184
RWS Rifle match NK 1020 - 1037
CCI "QUIET" 710 499 - 552
CCI Stinger 1600 1177 - 1199
Winchester Bulk NK 1020 - 1065

An interesting process. While the RWS was the most consistent, the accuracy results were not that good at 50 yards.
Some of the velocities were Not Known (NK).
The Velocitor and Stinger appear to need more barrel length to get the velocity.

 

[redmist25]

I am surprised at the deviation. It does show that the RWS, most expensive of course, is the most consistent. I shoot high end ammo and have done some reading about ammo tests. Many test procedures call for cleaning between ammo changes to help with consistency. I would clean my rifle and try the RWS again, shooting 10 -20 rounds to season the bore with the RWS lube and try the accuracy test again.