OK, I' m back with my results.
I test two bows, an ' 02 Martin Altitude with Magnum limbs and an ' 02 Martin Mv2 with Elite limbs.
At 69 degrees, the Altitude measured 64# and the Mv2 measured 56#.
I put them both outside for one hour at 7 degrees and then tested them again.
As soon as I pulled back the first one I knew the answer...
The Altitude measured 64# and the Mv2 measured 56#. No change whatsoever. [
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Boy was I wrong.
I could have sworn it pulled harder. And I must have been a bit cold. It must be the body' s defense mechanism shutting down circulation to the extremeties when it thinks it is too cold, to keep the body' s core temp up.