Options:
A. Buy a couple of different brand magazines to see if they feed better.
B. Hammer type pullers SUCK...Hornady press mounted, cam operated puller is the way to go for bulk pulling.
C. Rounds probably have a taper crimp...just pushing the bullet further in a few thousands is probably not an option, bur I would try a couple first.
D. Get yourself a wet tumbling setup and process your 10,000 in batches of 500?