My solution to Magneto Speed

Discussion in 'Reloading' started by Randy Tidwell, May 12, 2019.


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  1. basinman

    basinman Well-Known Member

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    Anxious to see how it works. It is definitely better than attaching directly to the barrel. Nice job.
     
  2. Randy Tidwell

    Randy Tidwell Well-Known Member

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    I did some mods to the prints.

    Keep in mind this works for a Sinclair Windage top.
     

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  3. Randy Tidwell

    Randy Tidwell Well-Known Member

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    3-D drawing of block modified
     

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  4. Randy Tidwell

    Randy Tidwell Well-Known Member

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    This view shows the hole at the bottom to clear the socket head cap screw that the top rests on.

    The hole to lock the shaft in place is tapped for 1/4-28.

    The counter sunk holes are also for 1/4-28 Flat Heads.
     

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    Last edited: May 14, 2019
  5. Nitro 375

    Nitro 375 Active Member

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    On one of my heavy barrel match rifles it does not seem to have any effect. On my sporter's, it definitely does. I work up loads until I get the accuracy I want. Then I check speeds and go with the best combo of accuracy, pressure and velocity.
     
  6. Randy Tidwell

    Randy Tidwell Well-Known Member

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    Nitro, I do the same. Typically I load six rounds of each load to test, then shoot a 3 shot group. If it has potential, I then chrono the other three to see what it is really doing. If the load does not show any potential, the last three are moved the another box to be used as foulers in the future.

    My goal with this set up is to cut down on the number of shots needed to develop a load.

    This may not work, will find out tonight.
     
  7. Randy Tidwell

    Randy Tidwell Well-Known Member

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    Heading to the range in about an hour.

    Playing around this afternoon, came up with a new design that would allow the bayo to be adjusted to be anywhere you need it.

    There would be one more piece that would move up and down the up fright round bar that would hold the bayo.

    Will report back later tonight on the test result.
     

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  8. Randy Tidwell

    Randy Tidwell Well-Known Member

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    Well back to the drawing board. As a couple mentioned, bayou is to low. It measures 1/2" below the bottom of the bore. Needs to be 1/4" below the bottom of the bore.

    Going change the shaft to 3/4", that will raise it to 3/8" below and add a 1/8" shim under the block.

    If that works I will make a new set up.

    I could get it to read by increasing the sensitivity to 8, but got bad results.

    Did not effect accuracy:) 20190514_203608.jpg 20190514_204730.jpg 20190514_204749.jpg
     
  9. Randy Tidwell

    Randy Tidwell Well-Known Member

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    Just got home, thinking about this all the way home. Came to my senses, lol.

    I am sure the system will work with some minor mods.

    Problem is it will only work with a rifle with the same profile as the one I was shooting tonight. No adjustable ability.

    So, I am abandoning this design and build one based on the one I sketched this afternoon.

    Should be done this weekend

    Thanks everyone for your input.
     
  10. Darrell Brown

    Darrell Brown New Member

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    Thanks
     
  11. Remmy700

    Remmy700 Well-Known Member LRH Team Member

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    Do u guys really see that much probelms with magnetospeed strapped to the barrel? I have never noticed nothing but a little POi shift when on. Still tiny groups and I just use one for load work. If it’s a tiny group when on it’s a tiny group when off. Only used doing load work, is there something I am missing? I do a lot of load work.
     
  12. Randy Tidwell

    Randy Tidwell Well-Known Member

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    I'm one for eliminating as many variables as possible. I dont see much change with a heavy barreled match rifle. But see alot on sporters.

    JMHO
     
  13. Remmy700

    Remmy700 Well-Known Member LRH Team Member

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    Gotcha. Yeah all my ---- is heavy rigs also. Guess that is why I never noticed. Plus mine is always strapped to a can and not on barrel itself and I have noticed that makes a difference also in minimizing effects of the strap pressure on harmonics. Anyhow thanks for the info brother
     
  14. Popeye59

    Popeye59 Member

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    I was talking to a guy at the range and he said the Magneto speed does affect POI vs. not having it on the barrel, but it is constant and doesn't affect group size. He said for load development it really made no difference but when zeroing the scope with the decided upon load, to remove it from the barrel. He was only shooting to 200 yards.