At 40 foot-pounds of kinetic energy and arrow will pass completely through a whitetail deer. This requirement increases to about 10 lbs. more for an elk.
A common misconception is that a heavier arrow / broadhead combination will ultimately result in greater kinetic energy delivered to the target. This is not always the case due to many other factors, most importantly of which is draw strength. There is definitely a law of diminishing returns with regards to arrow weight.
On a single-cam bow, the idler wheel is the most crucial component with regards to increasing accuracy.
If your bow string is hitting your forearm upon release, chances are that it’s brace height is too short for you. The closer the bow string is to the riser, the better the chances are of the string hitting your forearm. Mechanically speaking, there is not a lot you can do to resolve this problem other than removing the grip from the riser and trying a thin rap or an even thinner grip. Another solution would be to adjust your shooting style.
Something as simple as replacing your metal nocks with plastic ones can result in an almost 5 additional fps on your shots. Somewhat related are items on the string itself like peep sites, kisser buttons and string silencers. These can weigh down your string, resulting in poor performance. If you do not need these items, leave them off, you will be rewarded in the long-run with better performance and in knowing that taking an animal with a “bare bones” setup is even more satisfying.
Draw length can have a major effect on arrow speed. Identical bows (size, draw weight, etc.) with a 1″ difference in draw length can have a disparity of almost 10 fps in arrow speed.
For more information on archery in general, check out The Comprehensive Guide to Archery
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