My copy of the rules are buried, but from memory…
There are a few different weapons as MR covers not only small arms (smoothbores and rifles) but also varying sizes of artillery.
I host The British Are Coming Yahoo group…you may want to pose the question there to see if we can assist you with what appears to be a missing table:
link
The game company itself is most likely kaput. TCS used to carry the rules, and the current owner of TCS was selling them a few years ago, but last couple of emails to him went unanswered, so the only company that I know that are selling them are Wargaming Miniatures (AKA Stone Mountain). They should check their other copies to see if that issue is across the board or just a one-off.
<edit> Okay, I couldn't stand not having the correct answer, so I dug out my copies. I have both a Tempest version (second edition, 1990) and a Mindgames version (same edition, but having the TCS address as opposed to the Tempest address).
Charts are slightly different…Tempest has 2.1 charts, Mindgames has 2.0.
There are the following charts:
2.1
two Fire and Movement (with 15mm on one side and 25mm on the other)
two Sequence of play/Melee and Morale Tables
2.0
one 15mm Fire and Movement with Melee and Morale on the back
one 25mm Fire and movement with Melee and Morale on the back
one Sequence of Play
So you are missing the Fire and Movement charts for version 2.1 with 15mm one on side and 25mm on the other.
Shoot me an email and I will send you the scans. preds81 at yahhoo.com. I am heading out in a bit to host a tour at Perryville so if you send the email now I can take care of this ASAP, otherwise it might be early next week.