The Lee Modern Reloading Second edition has some data, Accurate Powders has some data, and you might try Handloads.org.
If that is the Lee mold, your final weight will depend upon the alloy you use, and the temp at which you cast. The hotter the alloy and mold the heavier the bullets will be to a certain extent. You might want to also pick up a thermometer to monitor you alloy temp, and try and keep in in the 675 - 700 degree range.
If it is a GC design, I found that if I go much higher than that, the GC's are a pain to install. One thing that makes them a bit easier is to anneal them. Personally, I found it easier to simply keep the alloy temp under control.
Also after you pour up a batch, unless your water quenching them let them sit for around two weeks before sizing and lubing. This will give the alloy plenty of time to stabilize. This isn't to say that you cannot pour, size, lube, load, and shoot in say the weekend you pour them up, simply that sometimes if allowed to sit they will actually get bigger after being sized right after casting. This may or may not effect how well they will fit in your cylinder or the pressures you will have.
I have found that when using straight wheel weight alloy, two weeks works perfect. I pour up a hundred or so, once cool toss them into a baggie, then after two to three weeks I lube and load. Mine will shoot great as cast at the above temps with no checks using lighter loads, as well as when they get run through the sizer for the GC. I use a mix of LLA referred to as 45/45/10 or Recluse Lube, which is 45% Alox, 45% Johnson's Paste Wax, and 10% Mineral Spirits. Directions can be found here,
Tumble Lubing--Made Easy & Mess-Free
I use it almost exclusively and have pushed it up to 1700fps in my 454 with a good fitting bullet with no leading. Just remember to slug your bore and size .001 - .002 over. Also be sure to check the mouths of your chambers on your cylinder. If they are smaller than your bore dia. you will need to have them honed in order to shoot cast without having to fight leading.