Regarding the accuracy of weapons, as we become more familiar with ballistic characteristics we can therefore make the weapons more accurate. We don't need a new propellant technology to do this, as is evidenced by the .408 CheyTac "Intervention Rifle" and its being expected to be able to engage a human sized target at 1500-1600m when its development cycle is complete.
I have a theory that we will be relying on the good old basic bullet (propelled by various means at various velocities and sizes) for quite some time. If I am not mistaken, even Particle Accelerator Weapons fire "bullets", just amazingly small (atomic) and amazingly fast (near relativistic V) at an incredible rate of fire.
I saw a photo of what a concept Particle Weapon had supposedly done to something like five sheets of 2 mm steel. It literally tore a hole through all five sheets in dT~ 0.0001s. Mind you I expect the weapon was "empty" after that, and I have no idea what the conditions of the test were, or the size of the weapon, but as usual we will most likely find a way to make it at least vehicle portable before our grandchildren are dead... if not sooner. I am no expert on theoretical weapons, I just saw what I saw and with my limited knowledge of physics and chemistry hypothesized (give me a break it has been 15 years since I last used it for anything serious). And no, I do not have a copy of the report, it was just a blurb under a photo about the wonderfulness of Colorado for high technology jobs.... I think National Geographic ran a similar photo...
S.
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