Inveatarms nipple size

Discussion in 'Percussion Rifles' started by jeff b, May 21, 2019.

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  1. May 21, 2019 #1

    jeff b

    jeff b

    jeff b

    32 Cal

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    I received some lyman nipples for my investarms 50 cal. They sent me 6 x1 were my rifle takes 6x.75 .My question is can I use the 6x1 nipples for my rifle.
     
  2. May 21, 2019 #2

    Grenadier1758

    Grenadier1758

    Grenadier1758

    58 Cal.

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    The simple answer, "No". Forcing the 6x1.00 threads will ruin the existing 6x0.75 threads setting up an eventual situation where the discharge shot will blow the nipple out of the nipple seat. So look for the correct sized nipples. No, you can't safely rethread the breech for the 6x1.00 nipples.

    Too often manufacturing procedures change. In your case, the threads were changed at the factory so newer rifles have 6x1.00 threads.

    Measure first, order second. You need to know thread diameter and pitch. Then comes overall length and cone diameter. You need a #11 sized cone of course. Not everyone has access to thread gauges so visits to hardware stores that have gauges is in order.
     
    Last edited: May 21, 2019
  3. May 21, 2019 #3

    Zonie

    Zonie

    Zonie

    Moderator Staff Member MLF Supporter

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    If the only thread guage that can be found is in the inch series of threads (UNC, UNF), none of them will match a .75 mm or a 1 mm pitch.

    A .75 mm thread will be equal to a 33.8 threads per inch pitch so the threads should look very close to a 32 thread per inch pitch.
    A 1 mm thread pitch will be equal to 25.4 threads per inch. A 24 thread per inch thread should be very close.

    If a thread guage isn't handy a #10-32 and a 3/8-24 bolt will work for comparing the threads.

    And Grenadier is right. NEVER try to rethread the hole to another pitch thread. Doing so will not only destroy the existing thread but it will remove so much material that only partial threads of the old and new pitch threads will be left. Definitely a dangerous thing to do.
     
  4. May 24, 2019 #4

    dsayer

    dsayer

    dsayer

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  5. May 25, 2019 #5

    tc45dave

    tc45dave

    tc45dave

    32 Cal.

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    Track of the Wolf has them for $5.99 /ea. I am using musket nipples on my Investarms Hawken.
     
  6. May 25, 2019 #6

    jeff b

    jeff b

    jeff b

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    THANKS GUYS
     
  7. May 26, 2019 #7

    Buster95

    Buster95

    Buster95

    32 Cal.

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    Part Number: RLP-S?
     
  8. May 26, 2019 #8

    tc45dave

    tc45dave

    tc45dave

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    RLGP-S is also listed. You may want to call them to be sure which part # fits your rifle.
     
  9. May 26, 2019 #9

    Grenadier1758

    Grenadier1758

    Grenadier1758

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    Expecting TotW to know the correct size can be a bit unreasonable if sizes changed during manufacturing. You really should measure the threads so you can know what to look for when you order from the catalog. Most hardware stores have thread test gauges for trial fits.
     
  10. May 26, 2019 #10

    DeeTV

    DeeTV

    DeeTV

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    RLGP-S is the closest to my trade rifle nipple but it is .02 shorter which I hope won't be a problem. I ordered this for a spare and to hopefully get a better fit with CCI caps which are too small for the factory nipple.
     
  11. May 26, 2019 #11

    dsayer

    dsayer

    dsayer

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    I use CCI #11 caps with my factory nipples from Lyman and have never had any issues. Investarms has been using a 6x.75 thread for as long as I'm aware. I think they're like $15 for a 3 pack and I can't think of a good reason not to just go straight to them for an Investarms rifle.
     
  12. May 31, 2019 #12

    jaybird14

    jaybird14

    jaybird14

    36 Cal.

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    Nipples are cheep.

    Buy both... test … toss the ones that don't work.
     

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