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I've got that same unit and like it. One thing to watch out for: If you test cast bullet loads, or lubed conicals loads, cut a piece of plexiglas to hang in front of the display end of the chronograph to prevent bullet lube from splattering over it.
 

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Discussion Starter #3
thanks Wind. I also got the cable to run in the window to hook up to my lap top, i'll see how that works out. going away tomorrow, but should be able to run some .32 balls through it on sunday.
 

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Discussion Starter #5
shot about 20 rounds out of the.32 today with an average of 1767 fps. high was 1777 and low was 1761. the book says "1940", not sure about that difference??
 

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I was at a gun club once and a guy a couple of benches down put a .308 round right through the brains of his new chrono.. Pretty hard to do, but it does happen! I heard a couple of swear words that day that I had never heard before or since.

Have fun.
 

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I was at a gun club once and a guy a couple of benches down put a .308 round right through the brains of his new chrono..
One day a guy at the club blew out the guts of his brand spank'n new Pro with a 12ga slug. I don't know who but someone a few benches away quipped , "He should shoot two more for group". :)

Bill
 

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Great pickup and great choice. I've had a Pro Chrono for years to chrono anything from crossbows, compound bows, modern guns and muzzleloaders, and never been unsatisfied. They work great. That said, if you use one indoors to check something like crossbow velocity, be sure the room does NOT have fluorescent lighting. The light cycle of a fluoro bulb will confuse the sensors and give bad readings. Same for other brands of optical chronographs.
 

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shot about 20 rounds out of the.32 today with an average of 1767 fps. high was 1777 and low was 1761. the book says "1940", not sure about that difference??
That is to be expected, I've notice considerable differences in published data vs. actually field data over the years. If you can get another chrono. (or two is even better) from a buddy or two and compare the readings from the different machines using the same load, this will give you an idea of the degree of accuracy of your chrono.

The published data is collected from a gun that is different than yours and under different environmental conditions and therefore will not be identical.
 

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Discussion Starter #12
I actually do have chronograph info for my other .32 from my friends chrony brand a couple years ago that match what I am getting (1776 fps.). 173 fps. in the flintlock world is quite a difference, I think. I will have to play with powder charges just to see what kind of load it would take to get up to their numbers. sounds like a good weekend project, more shooting :grin2:
 

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I actually do have chronograph info for my other .32 from my friends chrony brand a couple years ago that match what I am getting (1776 fps.). 173 fps. in the flintlock world is quite a difference, I think. I will have to play with powder charges just to see what kind of load it would take to get up to their numbers. sounds like a good weekend project, more shooting :grin2:
Does you published data give barrel length and if so is it the same length as your barrel ?

My old friend 3 finger Charlie loved woking up his own black powder loads!:wink2:

Have fun.
 

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Discussion Starter #14 (Edited)
book: .32 cal., 26" barrel, 1-66 twist. mine: 38" Douglas, twist unknown. new .32: 42" Rice, 1-48 twist.
YES!!!! I love shooting and playing with them! I am really fortunate that I can shoot anytime no matter what the weather is and just spend the whole day fooling around.
 

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It would be interesting to shoot that load out of a 26" barrel over your chrono. and see what the results are. I wonder if the ball is reaching maximum velocity while still several inches inside the barrel and the last several inches of barrel are slowing it down a bit. A larger charge may indeed help.
 

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Discussion Starter #16 (Edited)
It would be interesting to shoot that load out of a 26" barrel over your chrono. and see what the results are. I wonder if the ball is reaching maximum velocity while still several inches inside the barrel and the last several inches of barrel are slowing it down a bit. A larger charge may indeed help.
I have a new/never fired crockett here, but really hate to shoot it ( I would rather sell it). in the "real world", it really doesn't matter. the gain for trajectory ect. isn't much of a difference, very minimal. more of a "why" thing I guess?
 

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And the "why" thing is what makes it interesting and keeps us tinkering. A squirrel won't notice the 173 fps difference one bit. If you don't hit him you'll surely bark him!
 

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Just a thought, but could be that it's a new barrel.


The 50 cal Colerain barrel I used last year had some pretty good machining left in the bore. They "wore" out by the time I got up around 100 rounds.
 
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