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R9s - Third Test
   


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Chrono Data - Winchester

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Chrono Data - Speer
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Expansion Tests-
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Speer Gold Dot 124 grain JHP

This is just a repeat really of a previous test but using a ten round sample rather than five.

Having done ten shot strings and wanting to keep same format as previous, I will''double up'' with the entries in tables below in the row showing String Velocities - also rounding up or down with decimal components of chrono readout.

As before, the figure for muzzle energy is formulated by using the average velocity from chrono readings.



Speer Gold Dot 124 grain JHP
String
Velocities
-
1037 fps
1025 fps
1023 fps
1007 fps
1024 fps
1023 fps
1030 fps
1008 fps
1042 fps
975 fps
Low Vel
Hi Vel
Av Vel
Spread
Std Dev'n
ME
975 fps
1042 fps
1020 fps
67 fps
19.05
286 ft lbs


These results tie in very well with previous five round strings from the previous testing. Once again, two rounds at extremes have stretched the spread from what is otherwise a pretty close set of velocities. I like the higher energy figure obtained from this ammo. Expansion test was very favorable.


This and the 115 grain version still come out as the best choice in my opinion for use in the R9. Karl and Eric agree on that also.

You may next like to look at Expansion Tests Intro .......


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