Here's a 5-shot 100 meter case fireforming group I shot with my gopher shooting buddy's .17 Ackley Bee. The rifle was a light barrel M579 Sako in .22-250. There was too much recoil to see hits. He now loves this rifle.

Len REALLY likes this one. Yeah - that was a gopher. 20gr. Vmax at 4,000fps, fireforming brass.

I had one of those for a few years. Here is a couple groups shot with it, using a 6-18X Tasco spring loaded outdated model Varmint Scope.