Get one of those old arrows out. Put a close pin a few inches from the tip. Draw the bow so your middle finger is anchored in the corner of your mouth like a fish hook eat that finger. Make sure you are not feeling the knuckle of your thumb. Adjust cloths pin until it just touches the front of the riser when you achieve full draw. Measure your draw length. Now go to a pro shop somewhere and have them check the draw weight of your bow at your draw length. Add 1-2 inches of length to your draw this is your arrow length. For every inch over 28 add 5# of spine for every 25 grains of tip weight over 125 add 5# of spine. If you are under 28 subtract 5 # per inch. Remember you need arrow weight to get through a elk with a stick bow. I like 540 minimum. I think aluminum arrows are your best choice carbon are fine but take some tinkering. I use spruce but that takes a lot of tinkering.
So let's look at some hypothetical combos to help you better understand. Let's say you draw 28 3/4, and the draw weight of your bow is 53# @ your draw length and you are gonna shoot a 30 inch arrow. We needs to add 10# to 53 so now we are at 63. A easton or beman 500 spine is really close to 60# spine so with a 125grn tip you could tune that arrow with the shelf and brace height. That arrow. Would be lite side for me. A 2018 aluminum is about 70# spine so shoot a 125 grain glue on broadhead like a zwicky with a broadband adapter 45grns and that would be perfect. Please don't be discouraged by pcals post. Get lots of good practice that set up would kill a elk no problem. Tune your bow so it not noisy. Get out of the truck put boot to dirt you do not need to be 10yards unless that is as far as you can shoot and hold 6" group. Good luck
