+ Reply to Thread
Results 1 to 5 of 5

Thread: Central No.4 Clicks

Click here to increase the font size Click here to reduce the font size
  1. #1
    Contributing Member BobGee's Avatar
    Join Date
    Aug 2018
    Last On
    Yesterday @ 06:38 PM
    Location
    Sydney, Australia
    Posts
    5
    Local Date
    11-01-2024
    Local Time
    10:34 AM

    Central No.4 Clicks

    I am a newcomer to the forum. I signed up a while ago but have just become a contributing member. I have a No.4 Mk.2 and have just acquired a Central sight with a universal mounting plate with a Leverlock screw and a simple one hole iris. I have an adapter on its way so I can fit my Gehmann adjustable iris.

    To cut to the chase, I suspect that my Central sight questions might have been answered already but there is so much information on the website that even using the search function returns more posts and threads than one can easily deal with. It also seems to be very easy to lose a thread/post and not find it again!

    On one post I found the following:

    The very basic way to find out what a "click" is worth on any sight is simply to count the clicks for 5 MoA which is the distance between two of the engraved lines on the sight face, 10 clicks = 1/2 MoA 20 clicks = 1/4 MoA.”

    My question is: is it not possible to determine which type of sight you have by the total number of clicks per revolution of each knob? I'd have thought that, as a manufacturer, it would have been easier to increase/decrease the number of detent cuts/divots in the underside of the knobs than to provide different threading on the adjusters with all that that entails.

    Incidentally, are the 1/3 MoA adjusters just used with the 7.62 sights?

    I'm also curious as to how the adjusters are held in position as I have not found signs of cross pins through the frames beneath the knobs to prevent the adjusters moving away from the posts when “unscrewing”.

    Any info on these three points would be of great interest, thank you.

    Bob

  2. # ADS
    Friends and Sponsors
    Join Date
    October 2006
    Location
    Milsurps.Com
    Posts
    All Threads
    A Collector's View - The SMLE Short Magazine Lee Enfield 1903-1989. It is 300 8.5x11 inch pages with 1,000+ photo’s, most in color, and each book is serial-numbered.  Covering the SMLE from 1903 to the end of production in India in 1989 it looks at how each model differs and manufacturer differences from a collecting point of view along with the major accessories that could be attached to the rifle. For the record this is not a moneymaker, I hope just to break even, eventually, at $80/book plus shipping.  In the USA shipping is $5.00 for media mail.  I will accept PayPal, Zelle, MO and good old checks (and cash if you want to stop by for a tour!).  CLICK BANNER to send me a PM for International pricing and shipping. Manufacturer of various vintage rifle scopes for the 1903 such as our M73G4 (reproduction of the Weaver 330C) and Malcolm 8X Gen II (Unertl reproduction). Several of our scopes are used in the CMP Vintage Sniper competition on top of 1903 rifles. Brian Dick ... BDL Ltd. - Specializing in British and Commonwealth weapons Specializing in premium ammunition and reloading components. Your source for the finest in High Power Competition Gear. Here at T-bones Shipwrighting we specialise in vintage service rifle: re-barrelling, bedding, repairs, modifications and accurizing. We also provide importation services for firearms, parts and weapons, for both private or commercial businesses.
     

  3. #2
    Legacy Member Alan de Enfield's Avatar
    Join Date
    Nov 2007
    Last On
    Today @ 05:36 AM
    Location
    Y Felinheli, Gogledd Cymru
    Posts
    2,613
    Real Name
    Alan De Enfield
    Local Date
    10-31-2024
    Local Time
    11:34 PM
    Don't forget that the MOA of each click will also depend on to which rifle the sight is fitted, and varies by the sight radius.

    A forum member 'parashooter' did a very good study and comparison of the differences between the No5 800yd sight when it was used on a No5 and when it was used on a No4.

    A brief extract ..........

    The 800-yard sight has a click value of ~0.66 MOA, with the No.5's 23" sight radius, but, when mounted onto a No4 with the 28" sight radius, it would yield ~0.55 MOA.

    A 20% difference !
    Last edited by Alan de Enfield; 03-10-2024 at 04:11 AM.
    Mine are not the best, but they are not too bad. I can think of lots of Enfields I'd rather have but instead of constantly striving for more, sometimes it's good to be satisfied with what one has...

  4. Thank You to Alan de Enfield For This Useful Post:


  5. Avoid Ads - Become a Contributing Member - Click HERE
  6. #3
    Advisory Panel tiriaq's Avatar
    Join Date
    Oct 2006
    Last On
    Today @ 04:17 PM
    Location
    Central Ontario
    Age
    78
    Posts
    1,103
    Local Date
    10-31-2024
    Local Time
    07:34 PM
    I don't know about clicks per revolution, but studying the Vernier scale as the knob is turned will tell you how many clicks there are to the minute. As mentioned, the actual change of POI on the target will be affected by the sight radius.
    It will be different with your No. 4 compared with a 30" barreled target rifle.
    Clicks per minute is not related to caliber.

  7. #4
    Contributing Member muffett.2008's Avatar
    Join Date
    Feb 2011
    Last On
    Today @ 04:33 AM
    Location
    Scone, NSW. Australia
    Posts
    2,186
    Real Name
    kevin muffett
    Local Date
    11-01-2024
    Local Time
    10:34 AM
    The 3rd minute sight is specifically for Metric targets, as opposed to the standard 1/2 minute sight primarily used with Yardage.
    The 1/4 minute sight was originally used with smallbore, but as rifle accuracy improved, a combination of half and quarter became popular.
    The thread spindles are the same, clicks determined by detents in the knob.

    Calibre and Elevation are determined by the Range Scale.
    Last edited by muffett.2008; 03-11-2024 at 05:31 AM.

  8. The Following 6 Members Say Thank You to muffett.2008 For This Useful Post:


  9. #5
    Legacy Member Rick's Avatar
    Join Date
    Oct 2006
    Last On
    @
    Posts
    64
    Local Date
    10-31-2024
    Local Time
    05:34 PM

    Not all clicks are clicks

    Somewhat adrift from the OP's question, I once had the very bad idea of measuring the movement per click (and between scribed range lines) on issue No. 4 sights.

    The brief version is that I started out knowing that these were sights made for military use, most of them manufactured during war where the objective was the rifleman being able to hold Minute Of Bad Guy during a TIC. And of course the reality of backlash in the mechanism, etc. But I didn't realize that the differences through the range of the screw's movement up and down would be so great.

    Anyways, watching the measured movement change as I screwed the sight up and down through the range... I finally realized I was about to go down a rabbit hole with no satisfactory ending if I pursued that in search of some consistency or insight.

    My Long Branch is normally wearing a Parker Hale vernier rear sight for belly shooting these days anyways, strictly for fun... but that was maddening back then, sorting through the coffee tin of rear sights I had accumulated, looking for a magical one.

  10. The Following 2 Members Say Thank You to Rick For This Useful Post:


+ Reply to Thread

Similar Threads

  1. Central No. 4 sight - help, please!
    By Potashminer in forum The Lee Enfield Knowledge Library Collectors Forum
    Replies: 5
    Last Post: 08-17-2018, 09:06 AM
  2. No32 MkII scope help - 10 clicks before elevation reticle moves upor down
    By jss in forum The Lee Enfield Knowledge Library Collectors Forum
    Replies: 10
    Last Post: 10-01-2016, 06:42 AM
  3. A FNG from central Arizona
    By retropox in forum Milsurps General Discussion Forum
    Replies: 3
    Last Post: 03-23-2015, 04:14 PM
  4. No32 Mk1 Elevation clicks
    By Ovenpaa in forum The Lee Enfield Knowledge Library Collectors Forum
    Replies: 6
    Last Post: 07-03-2010, 03:17 PM
  5. 17 clicks up for 100yd reduced bull?
    By NuJudge in forum M1 Garand/M14/M1A Rifles
    Replies: 5
    Last Post: 03-23-2009, 01:30 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts