CHRONOGRAPHING

Discussion in 'General Muzzleloading' started by Loyalist Dave, Sep 15, 2019.

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  1. Sep 15, 2019 #1

    Loyalist Dave

    Loyalist Dave

    Loyalist Dave

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    So I have a Chrony F-1 which works great for working up loads for the modern rifles and pistols, and the directions mention using it for muzzleloaders, BUT...I've also heard that one may need to put a piece of cardboard between the rifle and the chronograph because the smoke that follows the projectile from our traditional rifles can mess with the timing of the bullet. Has anybody had any such problems with this? I'd rather not schlep all the gear out only to find that all I get is an error message.

    I guess I could wait for a windy day....

    LD
     
    rodwha likes this.
  2. Sep 15, 2019 #2

    45man

    45man

    45man

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    I just shoot from a tad farther away. Some wind does help too.
     
  3. Sep 15, 2019 #3

    Irish lad

    Irish lad

    Irish lad

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    LD,
    I use an Oehler 35P and move the screens out to the limit of the cables, about 15 feet.
    Seems to work fine, and a bit of wind does help.
    Irish
     
  4. Sep 15, 2019 #4

    Sparkitoff

    Sparkitoff

    Sparkitoff

    40 Cal.

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    I have always put my chronograph at 10 feet from the muzzle when using black powder. Seems to work fine. I have been able to get away with 3-5 feet with substitute powder that doesn't smoke much. A light breeze is nice too.
     
  5. Sep 15, 2019 #5

    Loyalist Dave

    Loyalist Dave

    Loyalist Dave

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    WHEW ... OK then that's good. I was going to have a pretty elaborate set up otherwise. There's a dip in the terrain when you get just past 15 feet at my range and makes it hard to set up the chronograph tripod.

    LD
     
  6. Sep 15, 2019 #6

    Woodnbow

    Woodnbow

    Woodnbow

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    I’ve read or heard that same thing, only I was told that it was to protect the screen from ejecta coming from the shot. Most of the time I have placed a piece of cardboard in front of it but once when I did not I managed to hit the display with a wonder wad from my .54. I sent the Chrony off to the factory with some money and received it back in due time. If you don’t use wads I would not worry too much about it.
     
  7. Sep 15, 2019 #7

    Loyalist Dave

    Loyalist Dave

    Loyalist Dave

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    Thanks, one source said that the cloud of smoke would cross the screens and cause them to electronically "trip"... thus giving you the velocity of your exhaust cloud or just causing and error message.... maybe he just had his too close.

    LD
     
  8. Sep 15, 2019 #8

    hanshi

    hanshi

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    My chronograph is also an Oehler. The skyscreens are set up at around 12 ft or sometimes a bit more from the muzzle. It works as well with BP as it does with modern smokeless arms.
     
  9. Sep 15, 2019 #9

    nhmoose

    nhmoose

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    I have a friend that crony's SB guns he has a steel protector plate in front of the crony after killing 3 of them. A patch will kill one also from experience, so a good idea is a protector plate.
     
  10. Sep 25, 2019 #10

    bpd303

    bpd303

    bpd303

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    Same here...
     
  11. Sep 25, 2019 #11

    52Bore

    52Bore

    52Bore

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    Smoke was never a problem, it was the 45 cal felt wad out of my double rifle hitting the display face at MACH 1.5 that ruined mine years ago.
    Now I use a LabRadar, no issues.
     
  12. Sep 26, 2019 #12

    Sun City

    Sun City

    Sun City

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    I see no need to know how fast the balls going!

    I only need to know where it's gonna hit!
     
  13. Sep 27, 2019 #13

    tenngun

    tenngun

    tenngun

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    I never had a chronograph, but I discovered this forum looking for how fast my .62 was shooting. It was just curiosity. It’s a smoothie. And 50 yards is my range. A hundred for my rifle guns. A .50 loaded with 70 grains 3f exits white tailed deer at at any range I’ve shot one. All in smoothie range.
    Still curiosity is there. I have a copy of Lyman’s black powder ballistics, and still thumb through it.
     

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