Yeap , Re loaders hate them ! Like the Hornady 325 gr. 45-70 GOVT. FTX !The 30-30 head spaces on the rim so you can shorten the neck if necessary and have no affect on an 'pressure'. If you are worried about seating depth, that to should not be a problem if you stay in safe ranges with your charges. When I was shooting the 45-70 I noticed the cases which I retrieved from the factory Flex tip ammo were much shorter than the normal brass I use.