Valve adjustment

On a typical performance cam(like a 268/276/110) the valves are both closed for in the neighborhood of nearly 230 degrees, during the compression and power strokes. Thats a pretty big target to hit. On stock cams the window is even larger.
I pick what ever cylinder is at or near TDC compression stroke and make it so. Set the valves. Move to the next cylinder in the firing order,repeat. What could be simpler? Nothing to figure out. No chart to try and find. Works on any 4-cycle,gas engine.Right down to your Honda tiller/weed whacker.