everyone develops their own packing style
keep in mind, it's far easier to tamp and make draw tighter than it is to do the opposite.
if using a blend or ribbon cut (or a flake that I've rubbed out) I loosely fill to about 3/4 to top of bowl and don't press down!!!!!
then grab a nother hefty pinch and fill the rest of the bowl, gently pressing the tobacco down to a spongy consistency. what you want is very loose at bottom growing preogressivly more firm towards top.
now, for many flakes, many times I like to roll them in a circle and pinch off enough to fill 3/4 (+/-) of bowl and then rub the flake out just to top it off in the pipe's bowl.. this also works for discs like escudo. roll the disc and insert, then rub it out and top off and lightly tamp then light and enjoy!!! burns much slower too.
you'd be surprised how much tamping pressed teh tobacco down - so tamp gently!!!
If you aren't grateful for what you've got, nothing that may be coming down the pike will likely do the trick for you.