A man named Paco Kelly sells a tool that re-forms the nose of 22 rimfire ammo making it both more accurate (Acu'rzr) and allows better expansion than the hp (Nastinose). I have one of these little tools and can testify that it really works. The re-profiled bullets feed just fine (no jams) through my Ruger 10-22 and MKII. One of the little tools makes a cup in the nose of the bullet so that it can expand reliably.
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