[ARCHIVED THREAD] - 44 Chronograph problem

Posted: 9/28/2008 12:58:49 PM EDT

I'm trying to work up some loads for a 44 mag. in a Ruger Super Redhawk.
I have a Pact Pro chronograph set up 8 ft from the muzzle and when
I pull the trigger. The screen acts like its starting over then says "no data on start screen"
What do you think I'm doing wrong ?
I've used it for other stuff and its worked just fine but not for the 44.

Posted: 9/28/2008 1:20:14 PM EDT

[#1]

Blast. Need to shoot through a baffle at that range. Cardboard about 3 feet square with a 6" hole to shoot through. Place it about 3 feet from the muzzle.

Posted: 9/28/2008 1:20:57 PM EDT

[#2]

Your screen is too close to the muzzle and powder and shockwave are disrupting the readings. Try the more normal 15 ft distance and perhaps you will be successful.

Posted: 9/29/2008 6:52:46 AM EDT

[#3]

I kind of thought that muzzle blast was the problem. It's the only thing that
makes sence.

Keith have you tried the cardboard trick before ?

Posted: 9/29/2008 8:02:31 AM EDT

[#4]

Your too close to the screens I have chronographed black powder loads using my Oehler with no problem. There is plenty smoke and fire to screw up a chronograph if it is to close.

Move the chronograph back to at least 15 feet first.

Posted: 9/29/2008 3:17:19 PM EDT

[#5]

I've had similar problems with mine on sunny days. It kept giving me a "no shot start" error message. It could be you're too close but I had mine with the cables stretched right out and got the same error.

Posted: 9/29/2008 4:26:19 PM EDT

[#6]

Quoted:
I kind of thought that muzzle blast was the problem. It's the only thing that
makes sence.

Keith have you tried the cardboard trick before ?

Yep. .45 Super. Think compressed Blue Dot behind a 200 grain JHP.

I didn't want to hit the screens and I was getting 400 FPS. Found an old IPSC target with the center shot out. Shot through it and got 1250 FPS. More like it.

Posted: 9/30/2008 7:18:33 AM EDT

[#7]

This is the advice I got from PACT several years ago. Stretch the cables all the way out and place the timer on a separate table. If you place the timer on the bench you are shooting from, recoil will "bump" it and cause a false reading.

[ARCHIVED THREAD] - 44 Chronograph problem

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[ARCHIVED THREAD] - 44 Chronograph problem

[ARCHIVED THREAD] - 44 Chronograph problem