100 yd zero?

Jon A

Well-Known Member
Dec 28, 2001
Mukilteo, WA
I've noticed from some posts here and on other boards that many of you zero your rifles for 100 yds. Why?

I know you adjust the scopes to whatever range, etc, but wouldn't even 1" or 1.5" high at 100 simply mean you need no adjustment out to 300 or so (depending on your rifle) and "fewer clicks required" at longer ranges? Is there any specific reason you guys don't do this?

I'm wondering because whatever load I end up with in the 300 RUM should be flat shooting enough for a 300 yd zero without having to worry about excessive mid-range trajectory. 400 yds will only be 6 or 7 clicks away, etc. Is there something I'm missing here?



Well-Known Member
Jun 12, 2001
Palmer, Alaska
Hello Jon, all your drop charts are based on and referanced to the initial 100yd zero ie. 24.5moa up = 700yd zero with my 416wby and a 400gn XLC at 2550fps at +50degF. I understand your question, and yes you could and might need to carry in the field zeroed at 2 or 300yds BUT your elevation dial should indicate how far past your 100yd zero you are, weather its 2moa and on a 200yd zero or 4moa and on a 300yd zero and so on. My rifle is carried on 2.25moa for 200yds in the woods and short range under 300yds, when I'm on the hill it doesn't much matter, my rangefinder and drop chart tell me where I need to be and that takes about 10 or 15 seconds in all and I'm settling in for the shot.


[ 12-30-2001: Message edited by: Brent ]

Dave King

Well-Known Member
May 3, 2001
Jon A

We zero at 100 to get a "standard" setting on the scope. Once zeroed at 100 ,many of us reset the turrets to indicate "0" on the turret marks.

Here's another post about it.

"Althought not completely universal the 100 yard zero is very common. From a 100 yard zero setting we can all talk about the number of Minutes of Angle (MOA) we need to get to a certain distance and hold for Point Of Aim (POA) to Point Of Impact (POI).
As an example: I use a 308 Winchester a lot so when someone asks me for my 500 yard data for a particular load I simply reply "11.5 Minutes Up" which they immediately (in most cases) understand to mean that I adjust my scope up by 11.5 MOA over my 100 yard zero.

Many of the long range shooters have a little chart taped to their rifle somewhere. This little chart shows distances and elevation numbers. (My chart is inside the rear scope cap) I can loan my rifle (AND ammo) to another shooter and after he verifies that his 100 yard zero while shooting my rifle is correct for him he has all the additional data he needs to shoot the rifle to any distance (1000 yards or so)."

I don't believe many of use "walk around" with the scope set to the 100 yard "0" mark. I personally walk about on either 1 MOA up or 2 MOA up depending on the size of the critter I'm after.

Trending threads

Nightforce has great tracking capabilities, they are rugged, a bunch of elevation, holds zero forever, and reticles are designed for long range shooting. So if you are looking to shoot long distances constantly, then you need a scope that can take the abuse. -- gilmillan1

Culture Of Excellence At Nightforce Optics
By Len Backus

A high level of quality both in production and in service. Read More

Nightforce is such a solid combo of reticle, available elevation, glass that is good enough to shoot at the longest range you can dial. Nightforce has bullet proof construction that can handle the incidental horse rolling or some other rodeo action. -- bigngreen

Nightforce ATACR Scope Review
By Jeff Brozovich

The new NightForce ATACR is for sure a top choice for any long range shooter. Read More

The total package. Nightforce is the best I have used as far as turret feel and solid detents. I have never had one that didn't track right on and always return to zero. Nightforce NXS is the best value for everything I need. -- Broz

Nightforce Velocity 1000 Reticle Review
By Scott Shreve

I think Nightforce knocked it outta the park with this reticle! Read More