Yeah you totally can set it over the 200 limit though.
package NewMuzzleVelocityPackage {
function Projectile::onAdd(%projectile, %a, %b) {
%datablock = %projectile.getDatablock();
if(%datablock.newMuzzleVelocity !$= "") {
%projectile.initialVelocity = vectorScale(vectorNormalize(%projectile.initialVelocity), %datablock.newMuzzleVelocity);
}
return Parent::onAdd(%projectile, %a, %b);
}
};
activatePackage(NewMuzzleVelocityPackage);
From the Scattered Space forums. Used and tested. The projectile models may lag behind the actual projectiles at high speeds though.