I have been looking at getting some more cartridges for the next season. I am fairly happy with the Gamebore steel I usually use. I have been looking at Hevi Shot. From what I understand it is slightly heavier than lead and a fair bit heavier steel- The load sizes for Hevi Shot (http://www.justcartridges.com/pdf/nontoxic.pdf) seem to be the opposite to what I would expect. I am assuming you could fit roughly the same number of lead, steel or hs pellets into a 3” cartridge. Why only 34gm of hs in a 3” cartridge when there is 36gm of steel and 46gm of bismuth?