I was taught 1:1:1 ratio of the three ingredients.
We use the stuff to clean reenactment muskets which have the fouling of 24-36 consecutive blanks.
As for swabbing...it depends...
Some rifles do very well with a spit swabbing after each shot..., but some actually experience trouble with the second shot when this is done.
Some need a swab, and a drying for best accuracy, and some go two or three shots, THEN need a swab.
The humidity will play a factor, and so might the lube on the patch.
I've noticed that the calibers less than .45 seem to need more swabbing more often. My .40 need to be swabbed while the touch hole has the pick inserted, and the hole has to be picked just after loading, each shot, to reliably fire.
LD
I've wondered amount that. I was shooting a 32 caliber CVA Squirrel rifle the other day. I usually clean every five shots as that's the usual amount for each target at our matches. It took several more patches than my 40.
Just my two cents,
Walt