Cast bullets - small groups?
Is it worth the bother, many people, myself included, think so, yes.
You will not be able to match the performance of jacketed bullets but you can have some very satisfying shooting and reloading.
I have shot groups under 1 MOA using gas checked, cast, 6mm bullets at 100 yards and have read contest results where half MOA was approached but not bettered using .30 cal.
Now that is not good enough for some people. If you don't already have enough variables to play with this is a way to add more, alloy, lube, check, bump, size.
I want to build a .30 PPC to shoot cast bullet benchrest for score.
Tim