Postal competition, how is it adjusted?? Frostbite and Portsmouth.

Just seen the first winter scores locally in our Postal League. Can anyone explain how the scores are adjusted for different bow types. I can see they mostly are adjusted down for compounds, up for BB and LB and kept the same for Recurve. Then I spotted some compound scores that have been adjusted up to 600 for a Portsmouth! How can that be? How do the other bow types ever stand a chance of getting that score? I assume it's to do with number of golds? Is it handicaps taken into consideration? Be good to know how it all works.

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