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Thread: little old 140.....time for a rebuild

  1. #21
    Boolit Master
    Join Date
    Apr 2010
    Posts
    1,035
    Moving forward

    Got the crony out today.... very happy with this unit so far
    5 pumps is in the 525-530fps range.
    8 pumps gave me a average of 579.35 with a SD of 1.61! very consistent! so far.....accuracy test up next.
    Last edited by mac1911; 11-12-2017 at 02:42 PM.

  2. #22
    Boolit Master
    Join Date
    Apr 2010
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    1,035
    well as I said the barrel/crown has some damage but I spent sat morning blasting the hunks of sidewalk chalk left out side into pieces. Every now and again putting a few on paper. Right around 50 shots the barrel must have started "fouling" and the pellets settling as I was acutally starting to group. I put 3 10 shot groups on paper with this one being the best with the flyer.
    The others where only slightly bigger over all.
    target in previous post was 10 yards off hand this was 20 yards off hand...



  3. #23
    Boolit Master melloairman's Avatar
    Join Date
    Apr 2010
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    1,006
    For off hand shooting I think you are doing good . Marvin

  4. #24
    Boolit Master
    Join Date
    Apr 2010
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    1,035
    Quote Originally Posted by melloairman View Post
    For off hand shooting I think you are doing good . Marvin
    Figure a good day for me off hand is under 6moa I'm right at my average
    If we get warm day again I will bench it and break out the buckOpellets and try some different weights and styles.
    I have a,handful of 140/1400 and have had over the years. About the best I,have seen or a achieved is my 1400 with custom stock which is about 1.5moa on,5 pumps with JSB 14.3 grain pellets.
    At 10 meters with some RWS wad cutters I can get closer to 1moa.

  5. #25
    Boolit Master
    Join Date
    Jun 2009
    Posts
    812
    I have a slow leak in my 140, can't pump twice when storing, and have it last more than a couple of hours. Also air leaks out of the breach when firing. I went on the Mac1 website for a rebuild kit, which I purchased. There are two videos on the kit page. One on the flat head piston rebuild, which works. The other on the valve rebuild is blocked, saying blocked, SMC copyright infringement. Is it just my computer browser, or does anyone else have this problem also?

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Abbreviations used in Reloading

BP Bronze Point IMR Improved Military Rifle PTD Pointed
BR Bench Rest M Magnum RN Round Nose
BT Boat Tail PL Power-Lokt SP Soft Point
C Compressed Charge PR Primer SPCL Soft Point "Core-Lokt"
HP Hollow Point PSPCL Pointed Soft Point "Core Lokt" C.O.L. Cartridge Overall Length
PSP Pointed Soft Point Spz Spitzer Point SBT Spitzer Boat Tail
LRN Lead Round Nose LWC Lead Wad Cutter LSWC Lead Semi Wad Cutter
GC Gas Check