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Thread: Kimber Montana Ascent 280AI Load Development

  1. #61
    Member Tikka7mm08's Avatar
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    Hmm not sure. Didnt get better.

    Very consistent speed.





    Sent from my SM-G986B using Tapatalk

  2. #62
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    Quote Originally Posted by Tikka7mm08 View Post
    Hmm not sure. Didnt get better.

    Very consistent speed.





    Sent from my SM-G986B using Tapatalk
    Whats your jump like? I found they liked around 120-150 thou jump.

  3. #63
    Member Tikka7mm08's Avatar
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    I'm not sure - but the 150gn were 3.25, 3.20, 3.15 COAL so picking a good jump. Will try to 162 ELDMs and ELDXs with those jumps. Then will get bedded if no joy.

  4. #64
    Gkp
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    Have you considered barrel whip? I know it is a thing with kimbers. Quite often full length bedding or taking a couple of inches off will help

  5. #65
    Member mikee's Avatar
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    I would be trying heavier projectiles myself. My Montana WSM shoots way better with heavier projectiles than the 165's

  6. #66
    Member Tikka7mm08's Avatar
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    Yes I think it might be something like that....looking at getting the barrel rethreaded for my A-Tec adapter. And then someone to bed the action and lug. I think the COAL results with the 150 ELDMs means I'll have a lash with the 162 ELDMs at different COALs first.

  7. #67
    Member Tikka7mm08's Avatar
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    FIL next door has a dreaded bore scope so will pop that through too.

  8. #68
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    Quote Originally Posted by Tikka7mm08 View Post
    Trying depth test with 150gn LRABs.



    ..
    That's what I settled on with mine @ 3130 with plain old 2209 after trying all sorts of powders. Kills very well- last one levelled at 565yds and cartwheeled down the slope.

  9. #69
    Member Tikka7mm08's Avatar
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    Yes I like them but going to try heavier now.

  10. #70
    Member Tikka7mm08's Avatar
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    I am very surprised there isn't a wider range in speed... there should have been 30-40fps or thereabouts going from 3.325 to 3.215.

  11. #71
    Member Tikka7mm08's Avatar
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    Have loaded up some seating depth loads using OBT. Had to try the ELDMs anyway so why not OBT. One small thing...I am using new brass and like to put a wee mouth chamfer on before running through the sizer... had that wrong way round.

  12. #72
    Member Tikka7mm08's Avatar
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    Borescope showed polished barrel, no copper or surprises. Slight pitting one side at the muzzle. Will get new thread cut so will sort that. Might look at going to 22" as the speed is there to play with from 24".

  13. #73
    Member Tikka7mm08's Avatar
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    Thanks to @burtonator some 180gn ELDMs over 59gn RE26 to try with my 162gn OBT loads.


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  14. #74
    More pills and Powder!! burtonator's Avatar
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    Quote Originally Posted by Tikka7mm08 View Post
    Thanks to @burtonator some 180gn ELDMs over 59gn RE26 to try with my 162gn OBT loads.


    Attachment 165864
    Will be interesting to see what speeds you get from them!!
    Tikka7mm08 likes this.
    Life is the art of drawing without an eraser

  15. #75
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    No luck. Fired 2 180s and 2" apart so saving last 3 rounds. Rifle is off to barrel cut, target crown, A-Tec adapter and bedding job. @burtonator 2 shots went 2860fps (24" barrel).
    burtonator, veitnamcam and Gkp like this.

 

 

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