Reading the spiel above.....higher velocity with less recoil....I call bullshit on that. Or Mr Newton must have got it wrong all those years ago with his every action has equal n opposite reaction blah blah blah. Same pay load pushed at same velocity SHOULD be same backwards push/ recoil...unless the hole it's being pushed through is larger the pressure generated / effort- work-energy needed,to make it go must be very similar.
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