@longbowguy,
Way to disregard and mischaracterize the info I shared. The chart examples a well documented account of arrow weights that have proven bone penetration capability. I suppose if one disregards the context and omits the arrow building design principles which the chart supports, then you are absolutely right—way to let us know you have no clarity.
Furthermore You did a good job sharing your experience to example one of the arrow building principles I encouraged—bare shaft tuning.
Also, calculations is part of the process. As you said, “125 grains”. And no you dont need a chart, but some use charts to provide a reference in order to obtain a starting point that will lead to repeatable desired outcome. The chart answered the grain weight consideration question—that’s very clear.
You can specify something without making the input from others seem irrelevant.
First principles reasoning is a sound method for specificity—clarity as you put it.