Marty,
This is where you want at LEAST one trauma bandage in your FAK - they soak up a LOT more blood than a 4x4

Speaking of 4x4s, I've found that there is a HUGE difference between different brands. Most are a thin layer of fairly loosely woven mesh, doubled over

The "Johnson and Johnson" $x4 "Gauze pads" are a lot more tightly woven, and seem to soak up a LOT more fluid. With my chronic leg wound, I've become somewhat of the local "expert" on gauze pads - something about going through them 3 at a time, every 2nd to 3rd day. I buy the BIG box of 25. The ONLY thing I DON'T like about them is they are made in China

Another good dressing is the "Caring" brand "ABD Pad" - it's a 5x9 meant for abdominal wounds, but... It's a LOT like a "Maxi-Pad"

(As I sit here looking at my 9x12 box full of different wound care products/ Time to buy another box of 4" gauze rolls)