Broadhead grain
12-02-2002, 09:40 PM
#2
Join Date: Feb 2003
Location: Afton IA USA
Posts: 444
RE: Broadhead grain
Grain refers to weight. A 125 grain broadhead is heavier than a 100 grain broadhead. The heavier the grain, the bigger the blades and head. Theorically, that means a bigger hole. But not always. If you read these posts you'll see guys using anywhere from 75 grain to 125 grain broadheads for deer. The tech. guys can better explain it than I can but I know the 125's don't fly as flat as the 100's do. They drop more. I guess it depends on what you have your bow set for poundage wise and what arrow you're using to determine which size broadhead to use. I asked my guy at the pro shop and he recommened the arrows and broadheads for me. I'm learning about this too so I'll be very interested in hearing what the panel says.
KEEP IT LEGAL. KEEP IT SAFE. OR WE MAY NOT GET TO KEEP IT AT ALL.
KEEP IT LEGAL. KEEP IT SAFE. OR WE MAY NOT GET TO KEEP IT AT ALL.
12-02-2002, 10:05 PM
#3
Join Date: Feb 2003
Location: Washington State
Posts: 382
RE: Broadhead grain
A grain is a unit of weight equal to 0.002286 ounce (avoirdupois) or 0.0648 gram (metric). Arrow component weights are measured in grains.
The grain weight of a broadhead will affect several things:
1) Overall weight of the completed arrow. An arrow shaft tipped with a 125 grain broadhead will weigh more than the same shaft tipped with a 100 grain broadhead. Arrow weight affects speed, kinetic energy, and trajectory.
2) Dynamic spine of the arrow. Spine can be thought of as the stiffness of the arrow. A heavier head will make the arrow spine 'weaker' and it will flex more during flight.
3) Front of Center (F.O.C.) percentage. FOC is the measurement of the balance point of the arrow. A heavier head will make the FOC larger.
I would personally stick to a broadhead in the 100 to 125 grain class as this weight range is in the middle of the spectrum of choices and should give decent results with most bow/arrow combinations. If you want to experiment, you can try different tip weights to fine tune your system for the greatest accuracy.
HuntingNet Member since Spring 2001
The grain weight of a broadhead will affect several things:
1) Overall weight of the completed arrow. An arrow shaft tipped with a 125 grain broadhead will weigh more than the same shaft tipped with a 100 grain broadhead. Arrow weight affects speed, kinetic energy, and trajectory.
2) Dynamic spine of the arrow. Spine can be thought of as the stiffness of the arrow. A heavier head will make the arrow spine 'weaker' and it will flex more during flight.
3) Front of Center (F.O.C.) percentage. FOC is the measurement of the balance point of the arrow. A heavier head will make the FOC larger.
I would personally stick to a broadhead in the 100 to 125 grain class as this weight range is in the middle of the spectrum of choices and should give decent results with most bow/arrow combinations. If you want to experiment, you can try different tip weights to fine tune your system for the greatest accuracy.
HuntingNet Member since Spring 2001
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