Lead bullets DO have limits, and you might over-run them with the H-110. But, again, maybe not.....depends on the gun and the particular bullet being used.
Some lead can be driven to 1400+ with no leading problems....some will leave a bunch of themselves on every shot over 1000. Depends on the bullet. A smooth bore helps here too.
I opine that you can use the starting jacketed info with your lead projos, just remember that H-110 does NOT like reduced loads and may burn like crap at the starting charge. Also, do NOT reduce the charge below the recommended starting point. Mostly they advise no less than 10% below maximum, otherwise the combustion gets erratic and potentially unsafe.
If your bullets are hard and your bore is smooth, you might find happiness with the H-110. Be carefull and safe. Good luck!