The best Chronograph

[clannagael]

I noticed that my chrony was picky the first time I took it out. I fiddled with it for a while until I got it all figured out, haven't had a problem since. I admit that it's pretty sensitive to being perfectly parallel to the bullet path.

I figured out that setup is key with the chrony. I use an aluminum manfrotto camera tripod. It's a heavy and stable to eliminate any movement. I cut a 10 foot piece of engineers tape that I use to set it out from my muzzle.

At first I used a wood dowel that I put in the muzzle to align the trajectory to cross as close to dead center between the sky screens as I could. I've gotten it down now where I can just eyeball it by standing about 6-8 feet behind my rifle. I only set up the chrony after I set up my targets. I go stand behind my rifle and eye it up until I get it so the bore is aligned to the center of the chrony screens. It usually takes a few tries of inching the tripod back and forth and twisting the chrony to get it all lined up, but once I've got it I never get errors. Following this methodology works for me every single time.

Could be that I'm just lucky. But, I always set it up with the idea in mind that I only get that one inch-wide vertical window directly above the sensors, not the whole screen window.

 

[bozo699]

David,
I have came up with a simple and quick way to set up my cronographs,takes 30 seconds maybe. First I Install my lazar boarsighter in my muzzle then I line my muzzle on the bulleye perfectly! I have cut two pieces of cardboard to fit into my screens the one up front has a 1" hole in it 5" directly centered over the diopters the other piece of cardboard with a small dot made with a felt marker with the same measurment over the diopter as the first piece of cardboard. The rest is self explanitory, simply align the lazer beam through the hole on the front cardboard to the dot on the rear cardboard ;D walla simple. (REMEMBER TO REMOVE THE BORE SIGHTER BEFORE FIRING!!!!)
Wayne.

 

[TonyR]

Okie
I have the PVM-21 and it works reliably under any conditions, unlike the Chrony it replaced. The Chrony drove me crazy because I often end up comparing different powders and loads on different days and there are enough other factors that can make comparisons difficult without the chronograph adding to the confusion. I also like accurate average velocities because I usually test at shorter distances than I shoot in matches and I need the best possible come-ups from my testing zeros. The PVM-21 has really helped with that. It will give the odd reading once in a while but those stand out and are easily ignored if they don't also show up on the target. I think the key to consistent readings is the infrared screens used by the PVM instead of ambient light used by the Chrony which is inconsistent. There may be less expensive chronographs with infrared screens but I have not used one.

 

[clannagael]

David,
I have came up with a simple and quick way to set up my cronographs,takes 30 seconds maybe. First I Install my lazar boarsighter in my muzzle then I line my muzzle on the bulleye perfectly! I have cut two pieces of cardboard to fit into my screens the one up front has a 1" hole in it 5" directly centered over the diopters the other piece of cardboard with a small dot made with a felt marker with the same measurment over the diopter as the first piece of cardboard. The rest is self explanitory, simply align the lazer beam through the hole on the front cardboard to the dot on the rear cardboard ;D walla simple. (REMEMBER TO REMOVE THE BORE SIGHTER BEFORE FIRING!!!!)
Wayne.

Awesome idea. You win. ;D

 

[okie]

thanks for the advise

 

[bozo699]

Update,
Ok fella's all of you need to write wayne is a idiot!!!! I got thinking my pact chrono was working perfectly when I bought it then shortly after it got real picky.
After my last post I got really thinking about it,so before I went to work I went to investagate ??? A spider had built a nest in the front infrared section and a couple of irweags had died in the front chrono section. I cleaned it out and am confident it will work again. I should have waited untill I tried it in a couple of days but I couldn't wait to tell you all what a idiot I was.
Wayne.

 

[moosetracker]

I will not purchase another chronograph that does not have Infrared or Acoustic Screens, no matter what the brand or price.
I have two CED units at present, with "True IR" lighting.

Dual-sensor technology types, in my opinion, are at the mercy to inaccuracy and inconsistency unless a false lighting scenario is implemented (again, no matter what the brand).

Happy Shooting
Donovan Moran

+1. I also have the CED Millenium II with infra-red lighting. It never misses a shot. Once in a while I compare the infra-red with the regular screens and the difference in reliability and constance is amazing. I would not use a chrono without infra-red lighting.