RE: GP Tracer
.45 Long Colt
When I want more pinpoint weight I use 270 Winchester or 270 Weatherby. I wonder if any of our model airfoil designers have taken into account the practical application of projectile forms on ballistic co-efficient. The Weatherby smokes the Winchester out to about 1200 yards, then the higher BC of a boat-tail takes over.
Maybe I'll scratch build my next plane to look like a bullet with wings.