Ok, have a question, not sure this is the right place to ask it, maybe a physics professor would be a better place.
I own a Smith 940 9mm and a 640 Pro in .357.
The 940 with Winchester Ranger 127 grain +p+ has an MV of about 1200 fps.
The 640 with 125 grain Gold Dot .357 has an MV of about 1175 fps. Now, here's the question.
The .357 has noticable more felt recoil and muzzle blast compared to the 9mm. Both guns weigh roughly the same and to me it would make sense both guns would recoil the same. Every action has an equal and opposite reaction, right?
Anyway can anyone explain this to me?

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Still got the shovel