Using the inch scale to make tapered bands for 3/8 steel

This question (in various forms) pops up pretty often. So, five or six times a year I regurgitate this advice from the Wizard of Waco (AKA Bill Hays). It's the best I've seen. And, as it happens, directly addresses your latex!

From Bill:

"For 0.03 thickness latex you simply cut the small end so that it's 1 1/2 times the size of the ammo and the large end is twice as wide as the ammo.... So 1/4" steel ball ammo needs tapers of 3/8" X 1/2"... and 1/2" steel ball ammo needs tapers of 3/4" X 1".

For glass ammo, the small end of the taper needs to be the same size as the ammo with the wider end being 1 1/2 times the width of the ammo.... a 1/2" marble uses tapers of 1/2" X 3/4" and a 3/4" marble uses 3/4" X 1" tapers.

For lead ammo, your cuts can either be 50% wider than steel's.... or simply use two bands per side instead of one, and utilise the formula for glass marbles. (1/2" lead ball, TWO 1/2" X 3/4" tapered bands per side of the pouch.)

For straight cut bands, make them about 1 3/4 wider than the ammo (steel)."

To add my 2 cents worth - if you are cutting butterfly bands, reduce the widths by half (assuming your butterfly draw is about twice your face anchor draw).