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Thread: Best profile for re-crown?

  1. #1

    Best profile for re-crown?

    I have the opportunity to get my rifle re-crowned but it will be done by an engineer on a lathe, not a gun smith. I have seen a couple of options of how to finish the end of the screw cut but am wondering on what would be the best with a moderator?
    Is there a best option to have done?

  2. #2
    Recessed crown and sporter crown I don't no what difference it makes tho


    if your getting an engineer to re crown it , are you staying there with the rifle ? if your leaving it you'll be breaking the law if he's not an RFD


    is it really worth saving maybe 50 if that when you could get it re crowned by a professional gun smith who'll have all the right gear and know what he's doing and put it right if it messes up

  3. #3
    I'd agree with the above, I had Paddy Dane recrown my HMR (quite a fiddly job due to the very narrow bore) and it was a superb job with the tightest tolerances adhered to and all for 20. This was to correct a very poor crown by the previous gunsmith who outsourced the job to a local engineer.

    if you know the engineer is very talented and the job is free then maybe risk it. My HMR was done at 11degrees and shoots pretty well with a moderator, but being let down by poor ammo rather than the angle of the crown.

  4. #4
    No need for a talented engineer, just a trained one. There is no magic in crowning a barrel - any skilled turner will be able to cut a crown.
    A back yard hobbyist might be a risk, but by the same token I have seen a few 'gunsmiths' with all the gear produce some real crap and charged much for it.
    'Target crown - 11 or a sporter makes no odds, a clean exit from the muzzle is all that is required.
    A young man who isn't a socialist hasn't got a heart; an old man who is a socialist hasn't got a head.
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  5. #5
    A recessed crown will give a little more protection if you handle stuff roughly
    (The Unspeakable In Pursuit Of The Uneatable.) " If I can help, I will help!." Former S.A.C.S. member!

  6. #6
    I mostly use a straight 11' crown but I have recessed it before, makes no odds providing it's done correctly.


  7. #7
    Quote Originally Posted by Jager SA View Post
    I mostly use a straight 11' crown but I have recessed it before, makes no odds providing it's done correctly.

    Looks a lovely job.
    I have seen some realy awful jobs done by gunsmiths in the past, e.g a rifle threaded 2mm out of true! and the recrown looked like a file job done with a *******.

  8. #8
    Quote Originally Posted by levigsp View Post
    Looks a lovely job.
    I have seen some realy awful jobs done by gunsmiths in the past, e.g a rifle threaded 2mm out of true! and the recrown looked like a file job done with a *******.
    It needs to be done right, 2mm off the bore is a massive error, could potentially be dangerous.

    The crown is lapped and polish with the invisible thread protector, makes it look pretty.

  9. #9
    I will be staying with him while it's being done, he is a military armourer so it's not to far away from his normal job. I'm confident that he will do a good job, I just have to explain to him what I want....

  10. #10
    Quote Originally Posted by Jager SA View Post
    I mostly use a straight 11' crown but I have recessed it before, makes no odds providing it's done correctly.


    Would that be the same for a threaded barrel? Or will the moderator sit ok on all profiles?

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