
Refire delay for the HMG is 7500ms, nice to hear of someone hacking the weapons data script themselves for XTM

I think the slow firing you're observing is due to the way the command scripts actually fire - it's different to some other scripts (stock scripts included). Instead of using a fixed wait time for all weapons within a firing loop (e.g the part of the script that goes fire, wait, fire, wait, etc.), the plugin waits for the exact refire delay of the mounted weapon type, this means that when the turret is fired, all guns fire at the same time.
If you use the fixed wait time, a projectile will leave a turret more often, but it will only be one or two at a time - not eight for instance. Both methods ultimately result in the same number of projectiles raining down on a target however.
Hope that helps explain it.