This is my MUCH abbreviated process based on years of trying all the methods (OCW, Audette ladder, various chrono methods...etc)
Find max charge by looking at velocity, base expansion...etc. The rifle system you are using may be more or less efficient than the pressure barrel used at the lab...
Adjust your zero so that your BDC lines up at the altitude you will be hunting at.
If you are aiming up or down slope, just use the BDC as normal and favor slightly low.
At ranges under 500 yards it takes a substantial amount of slope (say, 20+ degrees) to cause a miss.
The difference between...
I have seen that sort of stuff when going between gilding metal jacketed bullets and solid copper, but I have never seen it between two jacketed bullets.
Good to know, I'll have to file that for later reference.
For being a longrange shooting forum, it is amazing to me how little wind gets talked about here. It makes me think that most here either have the wind mastered, or don't regularly shoot far enough to see it matter.
You do it one of two ways:
1) You ask your shooter to measure the target in mils before he shoots. Then use the target size itself as reference to judge the mil correction. (e.g. The target is 0.3mils wide... he missed by one target width... therefore, 0.3 correction)
2) You skip the mil...
Here is how most MOA shooters think:
"My drop is 40 inches...so, at this distance that is about 8.5moa. So, that means 34 clicks...1,2,3,4".....a couple minutes later, a shot rings out.
The proper way:
"At this distance, my drop is 8.5moa" ...(looking at numbers on scope, turns to the "8" then...
It is another tool...no better, no worse than others. However, not necessarily the most appropriate for every goal and situation.
It is the "ignoring" part that gets hard. Proponents of this method don't seem to accept that too well.
"Widely accepted" has no definitive value. Widely accepted...
Three shot groups tell you nothing. Your rifles true accuracy is better represented by what it will do at a single point of aim over 20 shots. What you are seeing could be the result of random grouping within your combo's actual dispersion.