I use pillow ticking & go to several places until I find what I want & buy the entire bolt.
Then I don't have to look again for 15 yrs.
Cut with a Ditz Rotary fabric cutting wheel & cut on the fabric cutting board & 2-3 layers at a time.
Can cut 5,000 1" patches in about 15 min & not have to cut any for yrs.
I do 1", 1.25", 1.50" patches & it covers .32 to .62. calibers.
CAUTION The Ditz Wheel is a Rotary Razor Blade & you will lose a dang finger REAL EASY. I use it & lock it away, as it is extremely dangerous.