scarygt -
You cannot make cross-over assumptions between powders just because their quantities look to be about the same. H110 is a very slow burning powder, needs magnum primers in .357 magnum and is not very tolerant of reduced charges. I haven't used Lil Gun, but it may not have the same characteristics at all. Make sure you are using a reliable reference for your powder/bullet combinations, start at the lower level charges, and by all means do not make inferences from one powder to another. You can safely use .38 special powder/bullet combinations to start with in your .357 (using .357 brass) and work up from there.
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