Sighting In Red Dot

[golfernash]

Been shooting them for years and always sight in with a sled. If the dot is on the target it doesn't matter where your cheek, face, or eye is

[bbcoach]

Been shooting them for years and always sight in with a sled. If the dot is on the target it doesn't matter where your cheek, face, or eye is

I utilized a lead sled for initial sight at 12-13 yards with dove loads.  Dial it in dead on then back up to 40 and shoot your turkey load to check.  Adjust as needed and Go Hunt!  As Nash said, once the red dot is sighted in where the dot is, is where the shot will go.  Cheek, face, eye or cant of the gun doesn't affect the target dot. 

[g8rvet]

I did some reading about this and there are some exceptions. What everyone has said is mostly true. There is no such thing as truly parallax free, there is just very little parallax.  Curved lens red dots are worse for parallax.  The real advertisement should be "very minor parallax".  The closer or further you are from 50-100 yards, the more the parallax, even in "parallax free" red dots is accentuated. Luckily, we are shooting shotguns and this effect is minor. 

this video helps if you understand that really neither of the red dots in the video exist - truly parallax free and full parallax.  https://www.youtube.com/watch?v=in8qj4Xvb3Q

[Number17]

Anything beyond neutral in any shooting sport will affect accuracy. The way you hold the gun, the way you cant the gun, the angle you pull the trigger, pressure on the butt and pressure on the fore end, relaxed or tight when the gun goes off, and certainly whether or not you flinch.
Follow through in shooting is just as important as a proper squeeze. People can relax on a lead sled  because they know they aren't going to get hammered, but tense up and flinch like crazy when shooting against their shoulder. Set your phone on slo-mo video and film yourself. I've seen some people completely lose their mind .25 seconds before the gun goes off, but they swear they made a good shot.

Some people notice no difference because they are disciplined shooters. If you are experiencing variation in different shooting positions, you need to work on your technique. It's as simple as that.

[Wigsplitter]

I have always used lead sleds for sighting in - never had any issues!

[CALLM2U]

I've always used a front rest and rear bag.  I've never noticed a change in POI with other postions.  But I also gave us shooting teeth ratteling guns years ago.   

[Prospector]

I respectfully have issue with red dot poi according to sled, knee or chair
At least with a FF3; if it's sighted in, you can see dot, and it's on your target that's where it should hit. The red dot sight is, let's say, way more tolerant of head position respective to stock etc.
Therefore, I sight mine in on the most stable platform I can bc as long as the dot is seen and placed on the head, the bird should accompany you home ( respective of range, etc). Just my $.02