Cast is reasonably accurate. We're 3 guys that seem to be much alike. Extreme accuracy, I'm not so sure cast is up to it. The jacket isn't the key piece, I think overall bullet consistency (being the same from example to example) is. Swaged lead bullets I would think to be up to it. No voids or air holes, and fewer variables.
Now, I'm talking groups under .25 MOA. Good cast should be good to .5 MOA, maybe smaller.