heard about this thread at the classic and figured i'd throw my two cents worth in the pot. there are three secrets to killing deer with a bow and i'll list them below:
-SHOT PLACEMENT
-SHOT PLACEMENT
-SHOT PLACEMENT
animals are tough! if you take out both lungs, the animal will die within site. it's that simple. it doesn't matter what they are shot with, steel or stone. i had a very crazy friend of mine shot a doe with a field point through both lungs. she didn't make it 100 yards. he forgot his broadheads that day and had field points in his quiver. i've also seen deer walk off after being hit with a 2.5" vortex expanding broadhead in the chest. i've skinned hundreds of deer, probably over a thousand. i've found everything inside deer, rifle bullets, buckshot, broadheads, and even sticks. i once found most of an arrow shaft with the broadhead in a doe. she had been shot through both shoulders from a treestand. the arrow angled down through the shoulders and stopped in the right front leg. the wound was several years old and she had a fawn that year so she was healthy. i shot a squirrel with a stone point that had to weigh 200gr. it was a quartering away shot while he was climbing up the tree. the point entered below his ribs and the tip of the point broke through at the base of the neck. the squirrel still managed to run to the top of the tree carrying the 700-800gr. arrow. quartering away shots are over rated. true, if the shot is placed just behind the rib cage the point will have an unobstructed path to the lungs. but the angle must be perfect to take out both lungs. one lung is just not good enough. i've seen arrows deflect off ribs on quartering away shots if the angle is too flat. on my last deer i had such a shot. she was staggering away, after being shot in the neck, and i took a severe quartering away shot. the 750gr. grizzly tipped arrow entered just forward of the hip and stopped just short of breaking the skin at the neck and shoulder junction. i only nicked the lung with the shot. my last hog was killed with a stone point. perfect broadside at 10 yards. the arrow buried up to the fletching and the hog ran about 20 yards. it bled like, well, a stuck pig. the story and pics should be in the pa mag soon. one problem i see quite often is hunters using light arrows. i consider 500gr light. i feel a hunting arrow should be 600+ gr. most of mine are in the 700-800gr. range. the main problem i have with stone is they come in around 100gr. for a hunting point, too light. this needs to be offset with a very heavy shaft to aid in penetration. i feel this is overlooked to often.
to see if your set up will work, at least on paper, here's the formula and rules i use:
KE = M * v2 / 450,240
<25 ft. lbs. for small game
30-40 for deer
> 40 for moose and elk
the setup on my hog hunt came to 35.03 ft. lbs. the performance of my arrow proved the numbers correct.