Two weeks ago I wrote about some wild numbers in chronographing my .40S&W and .45ACP.

Thanks to all, especial Mr. Oehler, who explained I was simply too close to the screens. The key being you have to be further away from the screens for sub-sonic ammo than for super-sonic. Which is why my .357Mag read okay, but the others didn't. If you can shoot through a baffle so much the better.

So, today I'm please with my results. My .40S&W, 175gr LSWC over 7.7grs of HS-7 gave me Avg 1,005fps, Std Dev 4 and Extreme Spread of 10, measured with 10 shots.

Thanks again, to everyone who responded.

Alf