Inexperienced mold user

OK so how do I put 40+ years experience into a couple sentences? Truth is I cant but I can make a couple suggestions. First I think it a mistake to start the learning process with any mold either hollow base or hollow point especially one with a removeable pin.
Second is going to have a direct relationship with #1 in that 4 casts per minute is magic. This because the 4 per minute cadence keeps the mold blocks at a high enough temperature to get good fill without voids. If your trying to learn on a removeable pin mold you wont come close to 4 per minute.
The actual required rate per minute will depend on a few factors like mold material, mold block size, number of cavities, and volume per cavity. On average though most molds will hold the proper temp at 4 per minute. I have some molds that I cant run faster than 2 per minute but these will be something like a 4 cavity 600 grain bullet and I have some that have to run full tilt at 6 per minute to make good bullets and that will be something like a single cavity 40 grain bullet in small blocks and 6 per minute is as fast as I can work my hands at a steady pace.
So for those reasons I suggest you start with a single or double cavity mold without hollow point or base. Once you start making perfect bullets with that then you will be ready to progress into other type molds. Another perhaps harsh reality I will point out is in regard to what I read other people say about their casting when they say something like "" out of 150 castings I got 75 keepers"" The harsh reality there is that you are either making all good bullets or you are making all bad bullets. The assumption is that the ones that look good are good and the ones that look bad are bad but the truth is they are all bad some visually bad some not but on the visually good ones the voids are there just not visible outside.
On the other hand if you are running at the right mold temp ( not alloy temp) and maintain the proper cadence to hold a steady mold temp if any are good all will be good.
That is a tough pill to swallow for beginners but the sooner you accept that reality the sooner you will be on your way to making perfect bullets and another reality is if their not perfect their not worth wasting powder on so remelt them and try again until they are right.
Like I said though I cant teach in minutes what it took 40+ years to learn about every facet and aspect of making good bullets but if I were asked to give just one single most important piece of advice it is that 4 per minute is magic. The rest you must learn from experience.

Oh yea I forgot to mention one important little tidbit. It is that using our Bullplate sprue plate lube is what makes possible the needed casting rate that will keep the mold at the right temp. Bullplate completely eliminates the galling of soft metals at high temp like aluminum and brass and at the same time prevents the soldering of alloy to the sprue plate bottom and mold block tops that can occur from cutting a soft sprue.