David,
I have not tried using lead bullets for my 9mm loading for the Luger, but have with the 30 Luger brass. I was having a problem with adequate neck tension on the JSP bullets that I was trying to load(discovered it was problems with the dies). I ordered a few 92gr LRN bullets from Western Bullet Company that advertises these bullets as for the 30 Luger brass.
These bullets are said to be .309 dia, but in reality, they are .310-.311 in. dia. and work wonderfully in the old Luger barrel. No sign of leading, and my reloads are up to factory spec. as far as velocity. I don't recall the BHN. They are apparently obturating very well.
I am another reloader that gets good results loading 9mm with Unique powder. It just works!! I am currently using only Precision Delta 115gr FMJ bullets. An excellent bullet with a price lower than plated(but more than lead, of course). I ordered a large amount BEFORE the election, so am in great shape bullet-wise. you might want to consider them, but if you are getting good results with lead bullets, it is hard to argue with success.....and saving money!!
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