Look at my signature. Two of my bows shoot a light 8.8 grains per inch XX78 X7 Eclipse 2212 target arrow. But, I shoot low poundage bows and I have a long 30" draw length. I shoot my arrows off the shelf too. I like to shoot 32" long (BOP) arrows and that gives me about 1.5" of clearance between the back of a very sharp broadhead and the knuckle on my finger that's in front of the shelf's riser. Since my arrows are 32" (BOP) and with my 30" draw length; that light 2212 target arrow, with a 180 point weight (2 blade STOS 145 grain broadhead glued to a 36 grain screw-in Zwickey long broadhead adapter) has an overall arrow weight of 526 grains. Now, my light target arrow grains per inch wise becomes a heavy hunting arrow with regards to grains per pound.
For my 41# longbow with a dacron bowstring, this gives me 12.82 grains per pound. For my 37# recurve with a Dyna97 bowstring, this gives me 14.21 grains per pound. In retrospect, both bows out to 20 yards shoot a flat shooting heavy arrow.
As for the .012 wall thickness, yes, it will bend if it doesn't get a complete pass through on a deer or a 150# feral hog if these animals fall on the protruding arrow. But, after I kill a deer or a 150# feral hog, I retire the arrow even if the arrow makes a complete pass through. I can always re-cycle the uni-bushing, point insert and broadhead (glued to the long broadhead adapter). So; I'm generally out $7, but if I can't afford another $7 to make another arrow, I should quit bowhunting. That's how I look at it.
BTW, One of my friends shot a feral hog just shy of 225# with a 2216 arrow and it didn't get a complete pass through with his arrow. The hog fell on the arrow when it died since it was partially sticking out of him and.....bent the 2216 arrow. All aluminum arrows bend no matter what their wall thickness is. If they bend in the situations I described, just make a new arrow and enjoy bowhunting.