On Tue, Jul 07, 2015 at 10:16:00PM -0400, Kurt Feltenberger wrote:
> So it would be theoretically possible for the projectile mass to be
> converted to plasma during the "firing" process and then travel at
> 100km/s or even 1000km/s?

Certainly.  The only problem is that by the time it has travelled for
one second, it may be 100 km from the firing ship but spread out over
a region 10 km across.  It's likely to deliver a scorching impact when
even 1% of it hits a ship a kilometre across, but nowhere near as
likely to penetrate armour anywhere.

- Tim