6-cavity molds really crank out bullets
If you are going to use a Lee 6-cavity mold, you will find you need a lot more than 50 pounds of Lead on hand, especially if you are casting .45 bullets. You will need more than a 10 pound furnace to feed it (I duplex, using a 20 pound bottom pour to cast from and a 10 pound furnace as a melter). I can get 24 bullets per minute for sustained periods. My experience with Lee as-cast diameters is that they run about the right diameter, but this can be varied by alloy content, metal temperature, smoke or graphite spray, and other variables.
Some of the suggestions I got on the Cast Boolit board was to use graphite or Bullplate lube between the sprue plate and the blocks, preventing galling and lead accumulations between them, as well as graphite smoke or spray on the cavities and block faces. Something I came up with on my own was to drop hot cast bullets into a 5 gallon bucket of water to prevent dings and nicks in the bullets, as well as make them harder.
I have limited experience with the TL design, but intend to get more. My only negative experience so far with them is that if you let the lube get on the bullet nose and do not remove it, it will build up in your seater die and gradually your bullets will get seated deeper and deeper. After discovering this, I did two things: buy Dillon seater dies (which allow cleaning without losing seater adjustment), and whenever possible (holding the bullet with large tweezers) dipping just the grooved portion of bullets in Lee Liquid Alox thinned with mineral spirits, then sitting it on its base.
There is a guy on the Cast Boolit board who buys the lube from the same people Lee does, and sells it a lot cheaper.
I will note that in the impact area at Camp Perry right after the pistol phase of the National Matches, I picked up some .45 200gr TL SWCs. They were far outnumbered by the FMJ's, swaged SWC's, and H&G 68 cast bullets, but they were there. Bullseye shooters use wimp loads, so the only distortion on the bullets was the rifling marks.
CDD