One great way to easily get base addresses is to find the ammo address, once found add it to your table. Right click on it and press 'Do a pointer scan for this address'. Save the file somewhere you can find it back. Wait a while and you'll get a ton of baseadresses as result with all it's offsets.
Close the game, restart it. Find ammo address click again pointer scan. Cancel a new pointer scan. Open the file you scanned before and do a rescan with the new ammo address you got.
This might not be very clear. I recommend reading about pointer scan some tutorials to find out how to exactly use it.
Good luck!