yes heat treat them and then WQ some and shoot against each other in each of your alloys, try each one establish a bench mark at a lower velocity.
Casting methods will play a large role and will be the first.......
give Goodsteels post (
http://castboolits.gunloads.com/show...stency-applied) a once over and then a re-read as it is like drinking from a fire hydrant the concept is simple make the best bullet you can within your ability and then try to make them better each casting session. next is size the bullet the absolute minimum, But it must fit the throat. you will see many say it must be concerntric to the bore oh heaven yes it helps... Try different lubes...
But make only one change at a time i.e lube. I suspect that you will find a even chance with Lyman #2 in the alloy dept.
neck turning--- I do do it but ONLY barely enough to make the bullet tension even.
use the same headstamp if possiable. pick a trim length and uniform the cases the idea is to make each case the same for the Bullet tension to be equal in neck thickness and length. it is minuate part that will play in latter priority one should be the diving into the casting techniques
dont expect perfection off the bat just keep plugging away at it (casting techniques) and improve.
Look on here for the online (lead) calculator. keep good notes