Those small lead spews that come off of the sierra seconds come off real easy with the fingernail, then the bullet will shoot very tiny holes. I used to live near the Sierra Plant and have shot unold thousands of their bullets with the little spews that did not come off the bullet in their final tumble. I was shooting a Sako Repeater in 22 ppc, and those bullets all shot very tiny bug holes.
Stick 15-20 in a .30 -.44 caliber bullet box, shake for 10 seconds and voila, tips are gone.
