I’ve broken down charge ladders into 1/10 gr ( 6 kernel) increments to define the node width and edges, mostly at 500 Y and beyond and what I find is in a 6 br size case the node can be about 3/10 wide meaning to my targets that a middle will not be affected by .04 ( or 2 kernels) ~ unless I’m right on the edge of migration so with this in mind I think that at short range it may be even less influential compared to the other variables of short range shooting.
Thank you. This is the kind of information I am looking for. I have done a lot of testing over the years and I can say with certainty .01gn in a 30BR or 30-44 or even the 308 I shot for 5 years will open up a tight hole on the paper; done it many times. Same goes for seating depths when going into the lands. I've never jumped bullets in all the years I have been shooting because I always want to know exactly where the bullet will touch the lands. It is one of the benchmarks I use. I want exact everything or as near to exact as I can get. No guessing or "Good Enough" for me.
I will be the first to say that good fortune plays it's hand in this shooting game. A lot depends on the conditions and which relay one shoots on even or where they are sitting on the range, all of it matters. Having said that, I have seen a number of records broken in some of the worst conditions one could imagine. Usually someone figures something out, no matter where they are or sitting. Even some people win with "Good Enough" and I think quite often but that isn't the point of my question. Now that I have the ability to make nearly exact loaded rounds and the time and patience to make them, I was simply curious as to where I am doing something unnecessary; some proof without having to do another exhaustive search if it has already been done and someone one or ones are willing to share what they have proven. Guessing and speculation don't account for a whole lot, in my view.
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