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Discussion Starter · #1 ·
I did some comparisons using a recoil calculator to compare 10mm (Witness) versus .40 (HK) loads and found the following:

10% higher PF with 10mm shooting CB 135gr. (PF-179) than with .40 Corbon 135gr (PF-163)

27% more recoil energy 4.7 (10mm) 3.7 (.40)

Which reflects FELT RECOIL better? PF or recoil energy?

It seems like recoil energy is the answer because it takes into account the weight of each gun and the powder charge weight.

Am I on the right track here?

P.S. Calculator is at: ... ecoil.html

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