New guy needs a little help

[GHOST44]

I went to the range yesterday to sight in my new Springfield PI9132L (Yea I know pics will follow shortly as well as a range report)
I had some problems sighting in at 25yds with the adjustable iron sights and I didn't have enough time to sight the thang in before closing time at the range. I'm going to get there earlier tomorrow and bench rest the pistol to sight it in.

How many MOA's relate to 1" at 25 yards?

Any other tips on "sighting in" ?

Thanks, this is a great forum. I appreciate all your help.

[Hersh]

I believe one MOA is 1" at 100 yards and I'm mathmatecially challenged so there will be no attempt at a conversion :D Most people I've watched doing "sight-in" work will shoot three rounds, adjust the sight and repeat until desired POI is acheived. Obviously you need a good steady bench for consistency.

There are plenty of folks much more knowledgable than I on this topic so you'll get some good info soon.

Welcome to the forum!

Hersh

[swampertwo]

"MOA" is a term normally used to denote the 1" at 100 yds. for 25 yds, you'd be talking fractions and pistol sights are not normally calibrated like scopes in 1 click = 1/4" or 1/8". It's more done by trial off a bench or a Ransom rest. 1"@25yds equates to 4" at 100 yds.

Welcome to the forum...... ;)

[1911Tuner]

It's a proportional thing.

If a scope has 1/4-minute clicks...that is, 4 clicks moves the bullet impact one inch at a hundred yards, it would take only two clicks to move it an inch at 200 yards, and one click to move it an inch at 400 yards. Therefore, at 25 yards, it would require 16 clicks to move it an inch, and eight clicks at 50.

For the record...one minute of angle is 1.047 inches at a hundred yards.
2X that at 200...3X at 300, etc.

[srt]

this might be more of an explanation than you were looking for but here goes...

from www.m-w.com

Main Entry: 1min·ute
Pronunciation: 'mi-n&t
Function: noun
Etymology: Middle English, from Middle French, from Late Latin minuta, from Latin minutus small, from past participle of minuere to lessen -- more at MINOR
1 a : the 60th part of an hour of time : 60 seconds b : the 60th part of a degree of angular measure

so, what this means is one minute of an angle is 1/60th of a degree. if you were to draw an angle above a perfect horizontal line that was equal to one minute of angle it would be 100 yards away from you before it intersected a point one inch (1.047" to be exact as tuner pointed out) above the horizontal line. it is a coincidence that one minute of angle equals one inch at 100 yards. 25 yards is 1/4 of 100 yards, therefore at 25 yards one minute of angle would be roughly 1/4". smaller than the hole your bullet will make.

steve