Is the falmer arrows damage rating accurate

If Tamara Wijsman's formula is correct, hp can be factored out of the formula. Also, there's a 12/100 factor I saw from uesp.

resulting damage = damage * (1 - armorfactor)
armorfactor = 0.12 * (hidden armor + displayed armor) / 100
hidden armor = 100

Which gives these values.

50 armor -> 18% reduction -> 82% damage taken
150 armor -> 30% reduction -> 70% damage taken
317 armor -> 50% reduction -> 50% damage taken
442 armor -> 65% reduction -> 35% damage taken
567 armor -> 80% reduction -> 20% damage taken

The hidden armor in the formula is when wearing four pieces of armor (chest, head, hand, legs). If you are wearing robes or hood, or are missing feet or hands, then hidden armor is less than 100 and you get less reduction. This reduction in reduction is not reflected in the displayed armor rating.

Finally, damage reduction is capped 80%, so 567 is the maximum displayed armor rating that is useful when wearing four pieces of armor. 667 is the maximum displayed armor rating that is useful when wearing 0 pieces of armor.

Pick pocket the arrows from the NPC's who are shooting at targets. You have to do it before or after they are actually shooting at the targets unless you have the steal equipped perk unlocked. Then replace the ones you took with 1 arrow of the type of arrow you want to have a lot of. Then when they shoot the target you collect the arrows that hit the target and it will always be the arrow you gave them. NPC's get unlimited arrows to shoot so long as one arrow is on them they will continue to shoot that arrow.

My example was i joined the thieves guild and pick pocketed everyone in there and gave them all 1 deadra arrow. Now i go from the main room to the training room and collect all the deadra arrows they shoot at the targets to refill. I can get a stack of 100 or so arrows in about 7-10 min of running back and forth. GL to ya.