[imashooter2]

Doing it right isn't easy. Link to Firearms Tactical's simplified 10% ordnance gelatin (still pretty complex):

http://www.firearmstactical.com/tacticalbriefs/volume3/number2/article1.htm

 

[imashooter2]

If you don't mix it the same each time and calibrate it, comparisons of different shoots are worthless.