[a4a4a4a4]

You're throwing a lot of numbers around in an attempt to look like you know what you're talking about. Ballistics and wound cavities are much, much more complicated than just "more momentum == more deadly".

Example: The US military just replaced the .223 with .277 Fury for exactly the reason that the .223 is _too fast_ and doesn't shed enough energy when hitting a target.

Furthermore, you're mixing grains (gr) and grams (g). A 55gr (grain) bullet is 3.56 grams. A 0.9oz musket ball is 25.5 grams. So your momentum calculations are (11'067-13'209) grams * m/s for a musket and 3'581 grams * m/s. So the musket actually has 3+ times more momentum than the .223 round.

Musket balls are absolutely huge, there are effectively zero modern rifles which shoot a .640 caliber round. The .223 is a very small rifle round.

https://www.quora.com/Would-it-be-worse-to-be-shot-with-a-mu...

[stevenjgarner]

I'm "throwing ... numbers around" and including citations precisely so that someone like yourself can illuminate where my understanding is incorrect. I appreciate your clarification between grains and grams.

[a4a4a4a4]

Good, then go edit your comment to reflect reality.