Long Range Hunting Online Magazine


Go Back   Long Range Hunting Online Magazine > Rifles, Reloading, Optics, Equipment > Rifles, Bullets, Barrels and Ballistics


Reply

ACOG BDC question

 
LinkBack Thread Tools Display Modes
  #1  
Old 09-13-2012, 08:02 AM
Silver Member
 
Join Date: Jul 2011
Location: georgia
Posts: 187
ACOG BDC question

i know that the 6x ACOG calibrated for 7.62's BDC reticle is based on 147gr. 7.62 NATO ball ammo. my two question is; what barrel length are the nato published velocities from? second, if im considering buliding a 16" .308 (higher pressure as most know) to shoot moly'd 15gr x bullets (actually the lazeronis come that way but essentially the same thing), how much variation would i get from the bdc hold points? would it even be worth it to go with the acog? thanx for all info.
Reply With Quote
  #2  
Old 09-13-2012, 11:30 AM
Platinum Member
 
Join Date: Jan 2008
Location: SOCIALIST CONTROLLED TERRITORY OF NEW YORK
Posts: 4,388
Re: ACOG BDC question

Quote:
Originally Posted by vendetta333 View Post
i know that the 6x ACOG calibrated for 7.62's BDC reticle is based on 147gr. 7.62 NATO ball ammo. my two question is; what barrel length are the nato published velocities from? second, if im considering buliding a 16" .308 (higher pressure as most know) to shoot moly'd 15gr x bullets (actually the lazeronis come that way but essentially the same thing), how much variation would i get from the bdc hold points? would it even be worth it to go with the acog? thanx for all info.
If you already have it we can work with it and I will explain. If you don't own it I would consider a 1-8 variable in its place like the bushnell HDMR etc lots of choices.
__________________
"People sleep peaceably in their beds at night only because rough men stand ready to do violence on their behalf"
If you want to shoot Bergers start here!
http://www.longrangehunting.com/arti...accuracy-1.php
Reply With Quote
  #3  
Old 09-13-2012, 01:59 PM
Silver Member
 
Join Date: Jul 2011
Location: georgia
Posts: 187
Re: ACOG BDC question

so you're saying that they'd probably be pretty far off?
Reply With Quote
  #4  
Old 09-13-2012, 08:13 PM
Platinum Member
 
Join Date: Jan 2008
Location: SOCIALIST CONTROLLED TERRITORY OF NEW YORK
Posts: 4,388
Re: ACOG BDC question

Quote:
Originally Posted by vendetta333 View Post
so you're saying that they'd probably be pretty far off?
Its a crap shoot chances are not good past 300m, its not a precision optic that's not what it was designed to be. But we can make it work it will just not work 100% as designed.

The lines are 19" wide(the average of a mans shoulders) this is how the scope is used for ranging. So if the rounds are not matched to the stada lines in the optic and you range 600m and hold 600m you may be high or low. Unless you use the BDC with a range finder and ignore the numbers to the left of the line.

You will then need to do one of two things, shoot the drops and record the data (dope) or take measurements. To take measurements you will need a 100m range and a meter stick

Tape the meter stick to your target at 100m and record the measurements between the stada lines. Then enter all info into a ballistics program.

ACOG BDC reticle measurements - M4Carbine.net Forums
__________________
"People sleep peaceably in their beds at night only because rough men stand ready to do violence on their behalf"
If you want to shoot Bergers start here!
http://www.longrangehunting.com/arti...accuracy-1.php
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes


Similar Threads for: ACOG BDC question
Thread Thread Starter Forum Replies Last Post
ACOG TA01 w/ Larue RCO Armosino Optics For Sale 6 11-28-2012 04:18 PM
Acog pschirm2 Optics For Sale 2 04-09-2012 10:13 AM
Trijicon ACOG......... dixiejagds Optics For Sale 1 03-18-2010 02:39 PM
WTS/WTT Compact ACOG ICANHITHIMMAN Optics For Sale 0 08-16-2009 09:08 AM
WTS/WTT Trijicon ACOG TA31F RCO M4 ICANHITHIMMAN Optics For Sale 1 02-26-2009 12:01 PM

Current Poll
Are you on Facebook?
Yes - 46.38%
1,113 Vote
No - 19.54%
469 Votes
No, but I may join - 1.75%
42 Votes
No way, are you kidding? - 36.08%
866 Votes
Total Votes: 2,400
You may not vote on this poll.

All times are GMT -5. The time now is 06:12 AM.


Powered by vBulletin ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Management Powered by vBadvanced CMPS
All content ©2010-2014 Long Range Hunting, LLC