cyphertext
US Veteran
You've got something wrong... sight over bore height maybe?
Question – Zero Distance Adjustment
- Thread starter rjbFL
- Start date
You've got something wrong... sight over bore height maybe?
hdrolling
US Veteran
I guess I'm just stuck in my Military ways, shoot on a 25m range to zero on a 300m target.
I have yet to shoot at a civilian range, are they normally all set up in yards?
I have yet to shoot at a civilian range, are they normally all set up in yards?
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cyphertext
US Veteran
All of them that I have been to are. We don't use the metric system in the civie world.
5point5sixGUY
Member
Reid Henrichs just put out a video shooting at multiple distances (100-400 yards) with two rifles with two different zeros (100ydZ & 50/200ydZ) You can see the results for yourself.
[ame]http://www.youtube.com/watch?v=lP7dszBAezk[/ame]
[ame]http://www.youtube.com/watch?v=lP7dszBAezk[/ame]
Kadonny
Member
Good video that shows what really happens. I like that it even sort of supports my 100 yard zero. Nice.
cyphertext
US Veteran
There is nothing wrong with the 100 yrd zero, depending on what your intended ranges and type of shooting you want to do.
For defensive shooting, it may be better than the 50 yd zero simply because there are no hold overs... either low or on. And aim for center mass and it isn't much difference.
ChattanoogaPhil
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My chronograph says that my rifle shoots AE M855 at an average muzzle velocity of 2928fps out a 16in barrel.
50yd zero with 2.5in sight over bore keeps the bullet path within about an inch and a half of line of sight out to 230yds then about three inches below line of sight at 250yds.
100yd zero keeps the bullet path within about an inch and a half of line of sight out to 180yds then about six inches below line of sight at 250yds.
I live in the woods of Tennessee where shooting other than at the range isn't likely to be further than 250yds unless firing down the highway
. I shoot offhand and use a 1x red dot for point and click center mass shooting.
So..... while some may quibble that a 100yd zero has a flatter bullet path at intermediate distances or that it's further below line of sight from intermediate distances to 250yds than a 50yd zero, either would serve my expectations of the rifle, ammo, sighting system, terrain and my abilities for the intended use of the rifle. That said, I use a 50yd zero.
50yd zero with 2.5in sight over bore keeps the bullet path within about an inch and a half of line of sight out to 230yds then about three inches below line of sight at 250yds.
100yd zero keeps the bullet path within about an inch and a half of line of sight out to 180yds then about six inches below line of sight at 250yds.
I live in the woods of Tennessee where shooting other than at the range isn't likely to be further than 250yds unless firing down the highway
. I shoot offhand and use a 1x red dot for point and click center mass shooting. So..... while some may quibble that a 100yd zero has a flatter bullet path at intermediate distances or that it's further below line of sight from intermediate distances to 250yds than a 50yd zero, either would serve my expectations of the rifle, ammo, sighting system, terrain and my abilities for the intended use of the rifle. That said, I use a 50yd zero.
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cyphertext
US Veteran
I use the 50 yard zero because I can actually see the target to sight in at 50 yards!
Kadonny
Member
I assume you meant there are no hold unders with the 100yd zero. You either aim at center mass or aim high. That's why I like it, simplistic.
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cyphertext
US Veteran
Yep... brain and fingers didn't play well together.
Kadonny
Member
ChattanoogaPhil
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I use the 50 yard zero because I can actually see the target to sight in at 50 yards!
Yup... those practical realities have a way of creeping into the equation.
Kinda like me agonizing over holdover with a calculator. Shooting offhand with a 1x red dot at the distances we're talking about, holdover is more of a discussion exercise than practical reality for me. Point-click-ding. I mean... that steel plate at 100yds will never know that my aim might have been an inch off, nor will the plate at 200yds know that I was aiming one tenth of an inch too high. And the plate at 50yds doesn't even give me a special ding for being zero. We don't have a 250yd plate at the club, but the idea that while shooting offhand with a 1x red dot I'm going to adjust my hold two inches.... uh.... that's eyesight skill level bragging rights I simply don't possess.
Now of course a steel plate ain't the same as a bad guy. Still, I doubt I'll hear any center mass complaining from a bad guy.
vonn
US Veteran
The only targets I worry about are hogs and deer and knowing where your rifle shoots is what I count on. That means I shoot unknown distances as often as I can so that I can hit what I want when I need to. 200 yards is a pretty good stretch for anything I have ever hunted except antelope,got one of those at 400 ,once!
