TR Sights - Quarter Third or Half Click Preference

Get or give advice on equipment, reloading and other technical issues.

Moderator: Mod

Message
Author
tom1
Posts: 155
Joined: Tue Apr 26, 2011 10:54 pm
Location: Western Australia

TR Sights - Quarter Third or Half Click Preference

#1 Postby tom1 » Thu Oct 08, 2020 9:19 pm

Interested in the opinions of shooters in regard to what they consider to be the preferred option for wind & elevation movements on the rear sight.
For years I have used a Central rear sight that is thirds on wind & elevation.
My Dad used a McRorie that was quarters on wind & elevation
I have recently purchased a T Mac that is quarters on the elevation & halves on wind
I recently spoke to a former state shooter who said when he was in the team it was a requirement to have rear sights with quarters for elevation & halves on the wind.
I am quite happy with what I am using and each sight is kept separately so I dont get them mixed up.
Any thoughts would be appreciated.
Thanks Brad Probert

scott/r
Posts: 885
Joined: Wed Aug 27, 2014 8:22 pm
Location: far north brisbane

Re: TR Sights - Quarter Third or Half Click Preference

#2 Postby scott/r » Fri Oct 09, 2020 5:46 am

I like the 1/4 - 1/4 myself. That way I've got the option of small movements if I feel so inclined.

bainp
Posts: 117
Joined: Fri Jul 15, 2005 6:05 pm
Location: Wagga Wagga, Australia

Re: TR Sights - Quarter Third or Half Click Preference

#3 Postby bainp » Fri Oct 09, 2020 6:43 am

I am pretty sure that you can convert the McRorie and T Mac's to either 1/2's or 1/4's on both the windarm and elevation arm. You can see that the knobs are in two halves. Each knob can be separated and you will find that the halves have different indentations on them. So it is only a matter of reassembling the halves with the preferable one against the ball bearing to give you either 1/2 or 1/4 minute movement per click. Be aware of backlash once reassembled, it may take a bit of adjustment to get rid of the backlash.
Philip

pjifl
Posts: 883
Joined: Fri Jun 17, 2005 12:15 pm
Location: Innisfail, Far North QLD.

Re: TR Sights - Quarter Third or Half Click Preference

#4 Postby pjifl » Fri Oct 09, 2020 7:15 am

I grew up with 1/2 and 1/2 rear sights for years and years.

Trying to coach someone with 1/3s on their sight was a mental nightmare to me. My brain simply could never think in thirds.

While I know that 1/2 on the wind makes some sense for various types of peep sight shooting, especially in some windy locations, I don't believe it is good enough these days for a general sight. After all, a top TR shooter can aim to about 1/8 of a minute with a peep sight. The eye is an amazing thing.

Peter Smith.

tom1
Posts: 155
Joined: Tue Apr 26, 2011 10:54 pm
Location: Western Australia

Re: TR Sights - Quarter Third or Half Click Preference

#5 Postby tom1 » Fri Oct 09, 2020 2:31 pm

Thanks for the replies. I probably should change my Central sight over to 1/4s . I havent seen many sights that are 1/3s . There was a bloke on here last year that had a box of sight parts for sale which included windage & elevation wheels in 1/4s, I will try to find him in the archives.
I gather that sights that used 1/3s werent overly popular or common .
Brad Probert.

scott/r
Posts: 885
Joined: Wed Aug 27, 2014 8:22 pm
Location: far north brisbane

Re: TR Sights - Quarter Third or Half Click Preference

#6 Postby scott/r » Fri Oct 09, 2020 4:04 pm

I got one from dgeorge52. He will look after you. You'll find a few post reguarding this in the target rifle section.
Scott.

MattyG
Posts: 65
Joined: Sun Jan 05, 2020 11:08 am
Location: Sydney NSW

Re: TR Sights - Quarter Third or Half Click Preference

#7 Postby MattyG » Fri Oct 09, 2020 6:27 pm

I believe 1/3rds were brought in to 'metricize' the Central sight, 1 MoA at 100m is around 29mm so 1/3rd was seen as near enough to 10mm. That would make it 30mm at 300m, 40mm at 400m etc. Having used a 1/3rds sight many years ago I just guesstimated 6 clicks from one side of the bull to the other, worked out near enough for me.
Matt M.
Endeavour RC
TR/F Standard/Smallbore/Service Rifles/Sporting Rifles etc
LOVE IT ALL!!!

tom1
Posts: 155
Joined: Tue Apr 26, 2011 10:54 pm
Location: Western Australia

Re: TR Sights - Quarter Third or Half Click Preference

#8 Postby tom1 » Sun Oct 11, 2020 3:24 pm

Thanks for the replies. Interesting history regarding intro of 1/3 click sights.
Brad Probert

ambo 1
Posts: 12
Joined: Sat Dec 06, 2008 5:59 am

Re: TR Sights - Quarter Third or Half Click Preference

#9 Postby ambo 1 » Mon Nov 16, 2020 2:05 am

Are you interested in selling your 1/3 sight or swapping for Tmac 1/4 ?
Phil.

tom1
Posts: 155
Joined: Tue Apr 26, 2011 10:54 pm
Location: Western Australia

Re: TR Sights - Quarter Third or Half Click Preference

#10 Postby tom1 » Mon Nov 16, 2020 8:40 am

Hi Phil, I have decided to keep my 1/3 sights. You would probably be able to find a set on this forum , someone would have them stashed away.
Brad Probert


Return to “Equipment & Technical”

Who is online

Users browsing this forum: No registered users and 37 guests