What are the best xp/h rates based on? I get different best xp/h rates than what is shown in those spreadsheets. For example, in fletching, the action for a set of asc bolts and a set of arrows is 2 "ticks" (1.2 seconds). This would make asc bolts 3600/1.2 * 200 = 600k xp/h and e.g. broad arrows 3600/1.2 * 225 = 675k xp/h. Similar discrepancies can be found in other widely used spreadsheets (e.g. Grimy's), so I'm going to assume that my calculations are off somehow. Could anyone point out where my calculations go wrong?