Good start. I don't have any .30-caliber NOE moulds any more because several I've cast with or owned are too fat on the nose for most of my rifles. Count on them being .001-2" larger with straight WW alloy than the drawing calls, which may be good for you or bad depending on what you're trying to fit. That mould should probably be called a 312302.
If you ever load for an AR, take everything you're learning now and do the exact opposite.