I read the article about the "Ness Safety Bullet" with interest and agree this would be an ideal boolet for in-city varmit shooting. Many years ago, as a Civil Engineer, I worked on the design of shooting ranges for the state Conservation Department. I did an extensive study of the ricochet problem that we were trying to resolve and the ranges all had tall berms as backstops and overhead baffles to keep people from shooting directly out of the ranges. From the shooting positions you couldn't see directly out of the range in the direction of the targets. But, we always found projectiles above the berms imbedded in the trees. So the bullets still had sufficient velocity to carry a long distance after they ricocheted. And a study of the bullets found in the trees answered the boolet design questions most likely to ricochet. Would anyone like to guess which bullets produced the most ricochets?