Magnetospeed while shooting a ladder?

Discussion in 'Long Range Hunting & Shooting' started by odoylerules, Jun 28, 2018.

  1. odoylerules

    odoylerules Well-Known Member

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    My question is will the magnetospeed effect the results of the test? Shooting a ladder is about barrel harmonics. I’m testing a rifle with a relatively thin barrel (Brux #5). I can’t imagine the harmonics aren’t being influenced with that magneto strapped on. I want to find that zone of small vertical dispersion AND a flat spot in velocity.
    (A lab radar would be sweet right now!)
     
  2. Gord0

    Gord0 Well-Known Member

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    Throw the magnetto speed on there and shoot it. It's great for exactly what you are doing. You'll be able to find your velocity nodes that way. Once those are found, fire some in those nodes and see what ES you are getting. Then take it off and shoot some groups.
     
  3. The Oregonian

    The Oregonian Well-Known Member

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    I know this isn’t the point of the thread, but I sold my MS and went with a Labradar for this very reason. Very happy I did. Not only can I load develop and record speed with no concern about POI, but I can do it every time I shoot at the range as well.
     
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  4. trucraft

    trucraft Well-Known Member

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    This is how I do it too and it works.
    In an ideal world it wouldn't change the poi but they do and as long as you know that itsi fine.
     
  5. can1010

    can1010 Well-Known Member

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    MK Machining makes an adaptor for the magneto speed to hang it from a front rail or the sling swivel stud. check them out they are a sponsor here
     
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  6. sean30ber

    sean30ber Well-Known Member

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    I magneto all my ladder loads. It will change the point of impact, typically up a bit, but not the group size. I still shoot 1/4 moa or better with my PRS rifle, with it on or off.
     
  7. the444shooter

    the444shooter Well-Known Member

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    Unfortunately, I believe that you have to run the OCW/Ladder tests to see where your accuracy lies, and THEN check velocities. No free lunch.
     
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  8. sean30ber

    sean30ber Well-Known Member

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    No argument, Everyone has a procedure they like to run. For ME, Along with the visual plateau I see running my ladder at 300m, I can also track the stabilized velocity plateaus at the same time. They usually coincide with each other but not always. What ever works for you. I have seen some run and OCW with just velocity and come out perfect. But thats another way to do it if your confident in your shooting. Good Luck
     
  9. Schnyd112

    Schnyd112 Well-Known Member

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    When I shoot for groups, I shoot how I would be shooting that rifle for real, ie field positions, bench, no extra hardware.

    I will usually run a pressure string of 10-15 rounds at increasing charges and chrono all of them. Depending on those results, I will shoot a mini OCW test (5 shot groups) if there is a noticeable flat spot in velocities. If it is just a hodgepodge I shoot a ladder. Once I find some that group I will go back to the chrono and play with seating depth to fine tune.

    Once I get a pet load I may chrono 5 at the beginning and 5 at the end of the day if things start to get wild. Otherwise I just shoot. This has shown me I have good days and bad, my inconsistencies far outweigh those of a developed load.
     
  10. sean30ber

    sean30ber Well-Known Member

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    "My inconsistencies far outweigh those of a developed load"

    So true with me also.;)
     
  11. 105amatt

    105amatt Well-Known Member

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    I wouldn't have the magneto on my barrel while shooting for accuracy. It will change barrel harmonics.
     
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  12. Mike 338

    Mike 338 Well-Known Member

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    IMO, a ladder test is a fair amount of work. I'm not sure how you "know" a thing hanging off the end of your barrel isn't affecting things to the point that whatever you find is inconclusive. That sort'a defeats the purpose of the test. Ladder tests don't need to be chronographed.

    On the flip side, just shoot about 15 or 20 shots with .2 grain increased increments with the Magnetospeed attached and you'll find one or two nodes that you can test later. I do this just by pulling off the road and shooting into a dirt bank about 15 feet away. I don't even look down the scope. I get my readings and I'm done in a few minutes.

    Magneto Speed is a great tool but I never attach it when I want to know how my gun shoots unless I never plan to take it off (which doesn't really ever apply).
     
  13. jasent

    jasent Well-Known Member

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    While it will affect poi I have not seen it affect accuracy unless the ms is moving under recoil. I have shot many ladder tests with the ms on and then off and results are the same even if poi wasn’t. I don’t even use the target anymore just plink steel while testing for fun.
     
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  14. J E Custom

    J E Custom Well-Known Member

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    I tend to like heaver barrel contours and have not seen any shift in POI with or without it. With that being said, ultra light barrel contours could be affected by adding anything to the muzzle so I would probably take the MS off during this faze of testing if I had a contour lighter than a #3
    or #4.

    J E CUSTOM
     
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