I use 2 cavity molds mainly , sometimes 1 & they get heavy enuff that when I empty my 10# pot I`m ready for a break!!
If I was useimg a 6 holer I`d probably go with the 20# pot , consider your needs , even future needs & decide .
Another aspect is I use different alloys for revolver boolits than some rifle boolits , so emptying the 10# pot is easier.
I started on a homemade cooker outfit & an electric furnace makes it more enjoyable & I seem to keep the area alot cleaner with the bottom pour !
There`s a learnin curve but it`ll go by qwik & I have`nt thrown my ladle out , some molds just work better with the dipper!
Always melt your alloys in a different pot to ingotize em , put as clean an alloy as ya can into the castin pot , it`ll save a bunch of headaches!!!
A thermometer is a must for consistent results & repeatablity .
I will say I cast a long time without 1 but now won`t without it !
2 peices of safety advise ALWAYS wear safety glasses !!!
& NEVER add cold alloys to a hot pot!!
I lay mine across the pot to warm up (dry off) before addin em for an extended castin session.
Here`s a site that may intrest ya!
http://castboolits.gunloads.com/
& hers a few of the revolver boolits that I cast except the 2 on the rt. I`m trying those out before ordering a mold.