Is there any significant difference in muzzle energy from a 12gauge pump-action vs a 12 gauge semi-auto; given identical ammo, identical barrel length and no chokes on either gun? I have searched for the answer to this seemingly simple question, but haven't found anything that compares/contrasts this. I know that there is generally more felt recoil in a pump-action than semi-auto, but don't know if this actually translates into more muzzle energy.