Re: Target Knobs vs Clicks vs Alt. vs Temp
Once again this is why I ALWAYS find a zero at 300 yards. 1/2" off at 100 yards and you are screwed at longer distances. When you find a zero at 300 yards, if you are 1/2" off center it wont effect the POI more than a very negligable amount at longer ranges. I havent noticed much of a zero change at 300 yards either when transitioning from the range to higher and colder elevations. 300 yards allows the "bugs" to be ironed out so to speak. When using this tecnique I have found clicks to be deadly accurate. That is just what works for me.
The point here is something will work for all of us. We just have to get out and practice and figure out what works us.
PS, When a rifle is zeroed in bright sunny conditions or vice versa, in cloudy conditions, the POI WILL change due to optical differances when the light conditions change. It is ussually about .5 MOA up or down and .5 MOA left or right. In other words if you sight in on a bright day and shoot tomarrow on a bright day it WONT be affected but if you shoot on a cloudy day you will see a POI differance. Zero in sun and shoot on cloudy the bullets will hit high and left, about .5 MOA
Long range shooting is a process that ends with a result. Once you start to focus on the result (how bad your last shot was, how big the group is going to be, what your buck will score, what your match score is, what place you are in...) then you loose the capacity to focus on the process.