Bullets seated too deep - Part II

[Old Bob]

Don't whack the inertia pullers directly onto concrete. That's what can happen.
Instead, stand up a short piece of 2x4 or 4x4 (~18" or so), and whack the puller down onto the wood.
For me when I use one (I also recommend the collet pullers used in your reloading press), I don't allow the puller to "bounce" but strike the wood and keep the puller basically down on the end of the 2x4. That way all of the momentum transfers to the bullet.
It is an inexact method of lengthening a cartridge, it's not as easy as "0.002 inch per whack") or anything. You might want to put a small line/ink mark on the bullet at the edge of the case mouth so you can see what kind of progress you're getting.

I use a 25 lb lead brick...

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