I rediscovered a partial box of Speer LSWCHPs and decided to try a few. The first thing I relearned was just how much fun cleaning a gun when using soft lead bullets wasn't. But the thing that drove me bananas was my chrono readings. The first round clocked at 200 f/s and the second at 1300 f/s. A trial with a .45 load showed a reading of 1658 f/s. None were possible. Cutting a long story short, the issue turned out to be the bright sunlight on the chrono at an angle. When I put the chrono in the shade, but with a clear view at the sky, the readings returned to the real world. The only thing I can think of is that the shadow of the bullet produced by the angle of the sun was triggering the sky screens. Trials with 22lr from rifles had produced realistic readings, so muzzle velocity was a factor too.