65 barracuda not charging PLZ help

Kody meile said
what kills a voltage regulator?to much FLD current draw?

It can.
A later revised squareback alternator has a much higher field current draw than the alternators these cars came with.
Seen something like 7 amps in a 1980s shop manual, vs somehting like 2.5 amps in most of our A-bodies.

Kody meile said
getting 9.86-10 volts FLD current

That's voltage.
Current we'ld have to calculate based on how much votlage was lost going through the resistor.