Having read the resource twice and found that the phrase that describes me in this case (and a probably unique to the UK) is that I am as thick as two short planks and was lost at the first x, I admit that maths and algebraic equations are far from my strong point, what I did glean from resource will help me with my long range shooting but I think I will have to break the article down in to nibble (not bite) size pieces and spend several hours digesting it and breaking the calculator out.
I have rated it good because once I can get my thick head around the article it will make a huge difference when I am at the ranges.
Never will I look at cant in the same way again I have even bought scope and rifle levels to help me keep on the straight and narrow, pun intended.
Keep these resources coming because even when I get lost on paragraph one they help me to shoot further and more accurately.