arrow size
#1
Thread Starter
Spike
Joined: Feb 2003
Posts: 1
Likes: 0
From: poplar bluff, mo usa
I am shooting a jenning speedmaster split limb single cam bow. I have bought some xx78 supernatural 2415 arrow. I am shooting 125 grain wasp hi tech cam lock broadheads. the arrows are flying low and to the right with the broadheads, should i just correct my sight to fix it or should i look into different broadheads or arrows.
#3
Joined: Feb 2003
Posts: 53
Likes: 0
From: Florence AL USA
Most broadhead flight problems are related to improper arrow spine. There's no reason to assume that there's something wrong with the broadhead, so don't go burning $$ on different brands.
You didn't give enough information to determine how close those arrows are to being the correct spine, but the Easton selection guide gets you in the ballpark by looking at draw weight and cut length. The spine of the arrow changes with its length and point weight. The bow can be adjusted to better suit the arrow by changing the draw weight.
To determine where you fall on the Easton chart, you need to know your draw length vs. the length of the arrow (overdraw), your draw weight, your release style, etc. Even then, the chart is not foolproof. Your one cam bow may have an AMO rating of 235 fps, and your buddy's have an AMO of 215 fps. You can both have the same arrow length, draw weight, etc., but it's clear that the 235 fps bow puts more energy into the arrow so proper arrows for it will have to be stiffer than ones for the 215 fps bow.
I'd suggest setting the bow up to closely match your arrows, then go have them cut or change point weight only as a last resort.
You didn't give enough information to determine how close those arrows are to being the correct spine, but the Easton selection guide gets you in the ballpark by looking at draw weight and cut length. The spine of the arrow changes with its length and point weight. The bow can be adjusted to better suit the arrow by changing the draw weight.
To determine where you fall on the Easton chart, you need to know your draw length vs. the length of the arrow (overdraw), your draw weight, your release style, etc. Even then, the chart is not foolproof. Your one cam bow may have an AMO rating of 235 fps, and your buddy's have an AMO of 215 fps. You can both have the same arrow length, draw weight, etc., but it's clear that the 235 fps bow puts more energy into the arrow so proper arrows for it will have to be stiffer than ones for the 215 fps bow.
I'd suggest setting the bow up to closely match your arrows, then go have them cut or change point weight only as a last resort.




