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May 9, 2020 at 5:20 comment added user1167758 That idea doesn't hold up. Lead has a density of ~12 grams per cubic centimeter. Jacketed round-nose pistol bullets will penetrate 24-27 inches in ballistic gelatin, and hollow-point bullets will penetrate 12-14 inches despite opening up into a true blunt impacter.
Jun 21, 2017 at 21:40 comment added Loren Pechtel @Draco18s It's relative density--a high speed projectile will be basically stopped after displacing it's own mass. The body's density is close to 1 g/cm^3 so it looks like penetration depth = density but that's not true in all cases.
Jun 21, 2017 at 17:27 comment added Draco18s no longer trusts SE I'm interested in knowing why the density relates to penetration depth. I mean, I realize that physics would say that it is, I'm just curious about the math involved to go from X-g/cm3 to X*length.
May 30, 2015 at 18:46 comment added jamesqf Indeed, given the problem of making gun barrels out of anything but metal, I would wonder why the society would bother with guns. Crossbows work quite well with wooden quarrels. Evolving technology might take a path that leads to some sort of explosive-propelled derivative of that.
May 30, 2015 at 4:23 history edited JDługosz CC BY-SA 3.0
added 30 characters in body
May 29, 2015 at 16:30 comment added user243 Making long needle-like bullets (probably saboted) would help, as long as they didn't just shatter on impact. I suspect it would be easy to armor against glass bullets.
May 28, 2015 at 3:14 history answered Loren Pechtel CC BY-SA 3.0