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Old 04-15-2012, 11:03 AM
VMFn542bob VMFn542bob is offline
Join Date: Oct 2009
Location: Arizona
Posts: 1,066
Default A MANN Accuracy Device for the 7.62 x 54R

The 7.6254mmR is still in use by the Russian military but the "R" in the modern official C.I.P. (Permanent International Commission for Firearms Testing) designation (7.62 54 R) stands for Rimmed, in line with standard C.I.P. designations.
This is one of many MANN barrels that will probably never be turned over the the CMP. A MANN barrel is a testing machine with many uses. I believe it is highly educational to see how MANN barrels are used so I will contunue to post relevant links on this subject.
Temperature Compensated Loading Curves for the 7.62 x 54R Armor Piercing Incendiary (API) Round
The purpose of this testing was to learn which variables were statistically significant in controlling the velocity of the 7.62 x 54R API round.
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