|
Post by ezekiel38 on Sept 25, 2018 22:53:22 GMT -5
Got the NECG rear peep on the 77/357. Nice groups with 173-180 bullets. This gun likes the Keith 173s with H110. The load is 4" high at 25yds. The aperature in the rear is bottomed out. I want to replace the brass bead OEM front sight with a FO red front sight. Common sense says I need a shorter front sight than the OEM to obtain POI/POA interface? Longest ranges with this little carbine will be 100-125 yds. Another question: Once sight height is determined whose sight should I purchase? TIA Tom
|
|
Deleted
Deleted Member
Posts: 0
|
Post by Deleted on Sept 25, 2018 23:57:32 GMT -5
I have an XS Outdoors 3/8" dovetail test front sight post. They are plastic with segments that you remove until zeroed and then measure so you know what height to order. Shoot me a PM with your address and I'll drop it in the mail to you if it will help.
|
|
|
Post by Stump Buster on Sept 26, 2018 9:26:22 GMT -5
You'll need a taller front post to lower the point of impact. Happy Hunting.
|
|
|
Post by webber on Sept 26, 2018 9:27:42 GMT -5
I have posted this before but people thinks I am crazy but you divide 4 inches by 900 then times the answer by the sight radius. That will give you how much higher front sight you need.
4/900XSR
Welcome to the world of radians of angle.
|
|
|
Post by ezekiel38 on Sept 26, 2018 9:55:24 GMT -5
Carpenters here in a minute and waiting for oatmeal. Sounds like I will try the math first. Thanks for the replies. Stumpbuster it makes sense to push the front sight down, not raise it up. I hate counter-intuitive things. Vmaxsplat, this may be an option if I'm stumped by the math. Oops Oatmeal is done.
|
|
|
Post by matt56 on Sept 26, 2018 15:30:20 GMT -5
Definitely raise the front sight to lower impact. The taller sight brings the muzzle down
|
|
|
Post by webber on Sept 26, 2018 15:34:40 GMT -5
Definitely raise the front sight to lower impact. The taller sight brings the muzzle down I sincerely believe he gets it now. Taller not shorter.
|
|
|
Post by ezekiel38 on Sept 27, 2018 8:58:12 GMT -5
Thanks for the help guys the math says: 0.10666"s Did I do this right? 1/10 of an inch? 4 divided by 900 X 22inchs=
22 inches is the sight radius. So the front sight has to grow in height a 10th of an inch?
If my calculations are true then a good fiber optic red front sight? I'm thinking Williams?
Thanks Tom
|
|
|
Post by squigz on Sept 27, 2018 9:03:36 GMT -5
|
|
|
Post by webber on Sept 27, 2018 13:34:19 GMT -5
Thanks for the help guys the math says: 0.10666"s Did I do this right? 1/10 of an inch? 4 divided by 900 X 22inchs= 22 inches is the sight radius. So the front sight has to grow in height a 10th of an inch? If my calculations are true then a good fiber optic red front sight? I'm thinking Williams? Thanks Tom That is correct. That is the amount you will need to make it hit dead on with the rear sight bottomed out. Now how much leeway you want to play with is up to you. I, when I find myself in your situation, will run the sight up a few clicks so I wont be completely bottomed out and see how high it is then and figure for that height. Then I will have some movement down if ever need it. That is up to you.
|
|
|
Post by ezekiel38 on Sept 27, 2018 18:31:01 GMT -5
Just thankful for all the help on this forum. Squigz read the Majorpandemic article, thanks for turning me on to it. Going to order that sight # from Williams.
|
|
|
Post by ezekiel38 on Oct 4, 2018 12:17:49 GMT -5
Just ordered a new Williams Firesight Stock#60238 for the little Carbine. Now the wait time, but with a remodel of the house, a new shed being delivered and starting work at the LGS things are busy. My gym visits are becoming less frequent and I don't like that.
|
|