Sighting in? - Deer Hunting Forums

Go Back   Deer Hunting Forums > General Forums > Rifle Hunting
Rifle Hunting Discuss Rifle Season topics

Thread Tools Display Modes
  #1 (permalink)  
Old 11-16-2012, 11:24 AM
Scrub Buck
Join Date: Aug 2011
Location: Lubbock,Tx
Posts: 26
Default Sighting in?

so this might be a stupid question but ive noticed that everybody always sights in a couple inches high at 100 yards, why is that? i have the new redfield reveng and it toldme to zero it in at 200yards so I could properly us the other holds out to 500 yards. That was besides the point,I just wana know why every one sights in high at 100 yards?
Reply With Quote
Sponsored Links
  #2 (permalink)  
Old 11-16-2012, 12:06 PM
tator's Avatar
B&C 180 Class
Join Date: Sep 2010
Location: North-Central Missouri
Posts: 3,258

Personally I don't do this- I sight in dead-on at 100yds. I think the reason they do this is that it's sort of better, I guess, to miss higher on a deer than lower plus it helps with distance. Obviously, thanks to gravity, our bullets would eventually fall to the ground if nothing stopped them (i.e. a tree, ground, animal, etc...) So the farther the shot, the more the bullet will drop thus creating the reason to zero in a little high of bullseye at the range.

anyone, please correct me if I'm wrong....
James 1:2-8
Reply With Quote
  #3 (permalink)  
Old 11-16-2012, 02:42 PM
BoneCollector's Avatar
Scrub Buck
Join Date: Apr 2012
Location: Southwest Pennsylvania
Posts: 3
Smile Sighting In

It is done to minimize the amount of holdover which "may" be needed at longer ranges. My advice, really, is to do some reading about shooting, sighting in, etc.. Reading about Point Blank Range (PBR) and Maximum Point Blank Range (MPBR) would be especially helpful.

Last edited by BoneCollector; 11-16-2012 at 02:45 PM.
Reply With Quote
  #4 (permalink)  
Old 11-17-2012, 12:29 AM
Scorpion8's Avatar
B&C 140 Class
Join Date: Dec 2011
Location: SE-AK
Posts: 760

For most cartridges shooting at 2400-3000fps a zero of 2" high at 100 yards will give you a shot within the kill zone out to ~300yards, which is by rights farther than most of us ever shoot.
NRA Life member
NAHC Life member
USN Retired
Reply With Quote
  #5 (permalink)  
Old 11-18-2012, 08:25 AM
B&C 140 Class
Join Date: Nov 2009
Location: Minnesota
Posts: 849
Default Scorpion is correct it takes the math out of it...

The idea is that you have say a window of 6 inches for your ideal impact area on a Whitetail. If you follow the method of Point Blank Range (PBR) you adjust your scope so that with a hold at the center of the target you will not be higher than 3 inches or lower than 3 inches on the animal from the muzzle to say 275 yards (an example). Each loaded round has a different distance based on its velocity and ballistic coeffent (aero dynamic term for how streamlined it is for holding velocity). You can then check the ballistic tables and it will tell you that for your rifle, firing this bullet, this fast, you want a 100 yard zero of this. For most of us that hunt in timber where a 100 yard shot is long this is unnecessary. It also could cause a miss if you need to carefully place a bullet between branches at say 50 yards.

Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Top Posters
Hunting Man8366
joel the signman3608
hunt NH1203

All times are GMT -5. The time now is 10:26 AM.

User Alert System provided by Advanced User Tagging (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.

SEO by vBSEO 3.6.1