The basic Combat Zone used the PowrSurge coverstock.
The average RG given was 2.5.
Rg Differential was .047.
The pearlized version, was called the Combat Zone Tracer, and used PowrSurge Pearl coverstock. Same core.
There was a TE1 version (red pin) of both the solid and the pearl, but they used different core.
TE1 solid: Avg. RG - 3.5, DIff - .032
TE1 pearl: Avg. RG - 3.5, DIff - .023.
The solid also had a TE2 (purple pin) which had a core with an average RG of 4.5 and a differential of .023.
Both TE1s and the TE2 used the PowrSurge * PowrSurge pearl coverstocks respectively.
There was also a TE3 solid (orange pin) which used a urethane cover, had an avg. RG of 6 and a Diff of .018. I suspect that was a pancake core.
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