Pennsylvania Firearm Owners Association
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  1. #1
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    Default I went crazy with my new chrony friend!



    Copy loads at your own risk. Data is based on 5 rounds fired yesterday. Everything was kept warm inside then brought out one at a time to the chrono pro.

    I went crazy for about a half hour shooting everything I have loaded. And I didn’t shoot the chrono!

    Trail boss looks like it’s not the most consistent powder but it doesn’t really matter for those loads. I may try to bump up the 308 subsonic speeds now that I have this chrono.

    The suppressors added a very small amount of velocity on everything but the AR Comp 5.56 load. Interesting.

    Anyone see anything else interesting?

    The AR9 didn’t get a suppressor mounted because I have a muzzle brake on it. That is my USPSA PCC gun.

    The “various” loads of 5.56 that have inconsistent velocity is just an ammo can I used to toss ammo in as I made it. That was back in the day before I learned the value of keeping track of what is what. There’s 4-6 different loads in that can that all work fine.

    Overall my 5.56 loads look a little on the conservative side which is fine. They are just range rounds for fun time.
    Life is ten percent what happens to you and ninety percent how you respond to it.

  2. #2
    Join Date
    Oct 2013
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    'burbs, Pennsylvania
    (Bucks County)
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    Default Re: I went crazy with my new chrony friend!

    Nice chart! You can have a lot of fun with a chrony when you reload your own.

    Here's a couple of articles you might find interesting for 9mm and .308. The heavy 9mm sub sonics are fun in a Ruger PC carbine. The .308 loads with H4895 are heavier than the Trailboss loads, and not subsonic, but are fun, accurate, and low recoil.

    https://www.shootingtimes.com/editor...mm-luger/99514
    https://rifleshooter.com/2017/09/308...50-pro-hunter/

  3. #3
    Join Date
    Oct 2012
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    Douglassville, Pennsylvania
    (Berks County)
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    Default Re: I went crazy with my new chrony friend!

    And how did you get all that data into the spreadsheet?
    My 'c' isn't working so I have to use substitutes.

  4. #4
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    Default Re: I went crazy with my new chrony friend!

    Quote Originally Posted by frankski View Post
    Nice chart! You can have a lot of fun with a chrony when you reload your own.

    Here's a couple of articles you might find interesting for 9mm and .308. The heavy 9mm sub sonics are fun in a Ruger PC carbine. The .308 loads with H4895 are heavier than the Trailboss loads, and not subsonic, but are fun, accurate, and low recoil.

    https://www.shootingtimes.com/editor...mm-luger/99514
    https://rifleshooter.com/2017/09/308...50-pro-hunter/
    Interesting articles, thanks for sharing!

    I plan to stick with the 147gr 9mm load as it meets all my needs for production handgun and PCC USPSA divisions, quiet fun with the MP5 and Glock 17, and just general range use with great accuracy and function.

    The .308 subs I make are pretty much just a novelty. I wouldn’t even mess with them if I had a bolt action .300 Blackout rifle. They’re just for hitting steel with a click, hiss, and a ping on impact.

    Quote Originally Posted by Walleye Hunter View Post
    And how did you get all that data into the spreadsheet?
    Wrote it down by hand, then typed it up in excel.

  5. #5
    Join Date
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    Wayne, Pennsylvania
    (Chester County)
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    Default Re: I went crazy with my new chrony friend!

    Masterfully done!
    - bamboomaster

  6. #6
    Join Date
    Oct 2012
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    Default Re: I went crazy with my new chrony friend!

    Quote Originally Posted by JoshIronshaft View Post
    Interesting articles, thanks for sharing!

    I plan to stick with the 147gr 9mm load as it meets all my needs for production handgun and PCC USPSA divisions, quiet fun with the MP5 and Glock 17, and just general range use with great accuracy and function.

    The .308 subs I make are pretty much just a novelty. I wouldn’t even mess with them if I had a bolt action .300 Blackout rifle. They’re just for hitting steel with a click, hiss, and a ping on impact.



    Wrote it down by hand, then typed it up in excel.
    Figures, I guess just pulling an SD card out of the crono and inserting it into the laptop was too much to ask for.
    My 'c' isn't working so I have to use substitutes.

  7. #7
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    Pittsburgh, Pennsylvania
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    Default Re: I went crazy with my new chrony friend!

    Quote Originally Posted by Walleye Hunter View Post
    Figures, I guess just pulling an SD card out of the crono and inserting it into the laptop was too much to ask for.
    My chrono app has an option to export as CSV, which you should be able to import into Excel.

  8. #8
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    Default Re: I went crazy with my new chrony friend!

    Quote Originally Posted by TooBigToFit View Post
    My chrono app has an option to export as CSV, which you should be able to import into Excel.
    Sounds good, does the chrono record or does it bluetooth to your phone for recording data?
    My 'c' isn't working so I have to use substitutes.

  9. #9
    Join Date
    Sep 2008
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    Default Re: I went crazy with my new chrony friend!

    My slightly modified chrono won't allow the rifle to fire unless it is sure it will blot-out the "X" in the 10 ring at any distance out to 1200 meters. Looking to acquire military contracts....
    Last edited by bamboomaster; March 1st, 2020 at 07:44 PM.
    - bamboomaster

  10. #10
    Join Date
    Aug 2014
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    Pittsburgh, Pennsylvania
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    Default Re: I went crazy with my new chrony friend!

    Quote Originally Posted by Walleye Hunter View Post
    Sounds good, does the chrono record or does it bluetooth to your phone for recording data?
    Mine uses a 3.5mm headphone jack (still present on my phone, thankfully). But the new version uses Bluetooth. I'd upgrade to the newer one if I had a good excuse, but mine still works despite the 9mm sized holes...

    https://www.caldwellshooting.com/ran...2.html#start=1

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