AFAIK, the post-64 Trappers (16" bbls) were only issued in four chamberings, .30-30, .357, .44Mag/.44Spec, & .45 Colt.
IIRC, the .32 Special & .38-55 standard & big-loop Wrangler & Wrangler II's were never labeled as "Trappers" by Winchester, even though they also had 16" bbls.
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