If I zero my red dot scope at 25 yards [Archive] - Glock Talk

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Never Nervous
04-08-2010, 18:21
where will the bullet hit the target assuming the bullet goes to point of aim.
Trying to sight in a red dot scope on the Sig 522 with a boresighter.

Thanks

NN

Davegrave
04-08-2010, 18:47
I'm confused by your question. As worded....it will hit right where you're aiming it if as you say, it's zeroed in and the bullet hits the point of aim.

Never Nervous
04-08-2010, 19:20
I'm confused by your question. As worded....it will hit right where you're aiming it if as you say, it's zeroed in and the bullet hits the point of aim.
My bad. I mean where will it hit at 100 yards?

volsbear
04-08-2010, 19:31
That should depend on the rifle and ammunition.

Never Nervous
04-09-2010, 06:46
That should depend on the rifle and ammunition.

I have the Winchester 333 that I will use. I will also use CCI but haven't decided what kind.

vafish
04-09-2010, 08:13
Here is a ballistics calculator.

http://www.handloads.com/calc/

IF you don't know the BC of the bullet you are shooting over on the left hand side is a BC estimator.

I used 1,200 fps for the velocity and the BC estimator with the round nose bullet selection.

With the red dot mounted 2.5" over the center of the bore if you sight dead on a 25 yards you will be 3.77" low at 100 yards.

But that is a lot of guesses on your set up and would need to be verified on the range.

Never Nervous
04-09-2010, 09:44
Thanks vafish, I will save the calculator.

RickyD
04-10-2010, 09:49
Vafish,

that is really neat, I saved that, too. Big thank you!

vafish
04-12-2010, 08:34
Vafish,

that is really neat, I saved that, too. Big thank you!

No problem guys.

It's not mine, just one I found. It's usually the first one that pops up on a google search for "Ballistic Calculator"

RickyD
04-12-2010, 10:14
No problem guys.

It's not mine, just one I found. It's usually the first one that pops up on a google search for "Ballistic Calculator"

Alright, but thanks for sharing. I never punched the right terms in, it seems.

volsbear
04-12-2010, 11:14
There's a blackberry app for this LOL

GSSF17
04-12-2010, 18:00
Grain of bullet? CCI what? Win 333 is a 36 gr, and a hp at that. Not exactly ideal for reaching out and touching something. Further, a red-dot is not suited for much over 50 yards anyway- at least, with any kind of precision.

All of these factors will mean at least an inch of difference at 100+ yards.


Understanding your ammunition, the impact of the environment on your situation, and rifle's capability will help you allow for all the variables that one encounters when making a long(er) whot with a .22 lr.

Good luck.

Never Nervous
04-16-2010, 20:24
I finally went to the range last night to zero the red dot scope on my Sig 522. Started at 15 yards. After a few tries, I got the sight set so the bullets were going almost thru the same hole in the 10 spot as long as I wanted to aim there. Kind of neat but felt like I was wasting bullets. Moved the target back as far as I could (25 yard inside range). Bullets were grouped the same but about 1-1/2 high over the 10 spot. I also noticed that if the dot in the scope is too bright, it will wash the target out making it difficult to see. When I set the dot just barely enough to see it, I could see the target a lot better. Sorry,
no pictures.

Oh! I was shooting Winchester 333 and Winchester Super X 40 gr. Super X shot good but lead is dirty.

Thanks for all of the replies. Big help