Arrow Weight
#1
Thread Starter
Join Date: Jul 2004
Location: Virginia
Posts: 36
Arrow Weight
I'm shooting a PSE Nova. Pull is set around 64 lbs. Shooting Beman ICS Hunter 340 at 29".
Have been shooting 125 gr heads, decided to drop down to 100 gr. Minimum arrow weight listed on the bow is 360 gr.
If my calculations are correct -
270 gr (9.3 gr. / inch X 29") shaft
21 gr for insert (from Beman's website)
13 gr for nock (from Beman's website)
100 gr for head
20 gr for fletching (I'm just assuming, I have no numbers for fletching)
______________________
That's a total of 424 grains for the arrow.
Too light? Just about right? Should I go back to the 125 gr heads? There wasn't really any change of point of impact when I switched from the 125's to the 100's.
Would I really gain any significant speed & energy by dropping from 125's to 100's? Would maybe dropping to a 90 grain head have any adverse effects?
Have been shooting 125 gr heads, decided to drop down to 100 gr. Minimum arrow weight listed on the bow is 360 gr.
If my calculations are correct -
270 gr (9.3 gr. / inch X 29") shaft
21 gr for insert (from Beman's website)
13 gr for nock (from Beman's website)
100 gr for head
20 gr for fletching (I'm just assuming, I have no numbers for fletching)
______________________
That's a total of 424 grains for the arrow.
Too light? Just about right? Should I go back to the 125 gr heads? There wasn't really any change of point of impact when I switched from the 125's to the 100's.
Would I really gain any significant speed & energy by dropping from 125's to 100's? Would maybe dropping to a 90 grain head have any adverse effects?
#2
RE: Arrow Weight
The minimum grain arrow on my bow is also 360 grains. I was told that I could go under this. I shoot a 328 grain target arrow and 363 grain hunting arrow. Also speed isn't important. (Read the signature) If you get more speed by dropping arrow weight, then you won't get more KE.
#3
Thread Starter
Join Date: Jul 2004
Location: Virginia
Posts: 36
RE: Arrow Weight
I'm not really worried about speed, per se. This thing is pretty darn fast the way it is. I just wonder if I'm gaining anything by switching to a 100 gr head.
If not, that will save me about $30 in not buying new Muzzy's.
If not, that will save me about $30 in not buying new Muzzy's.
#4
Giant Nontypical
Join Date: Feb 2003
Posts: 9,175
RE: Arrow Weight
You won't have any significant gain in speed. Maybe 5 fps. The change will have more dramatic effect on your spine than anything else. If you were on the edge of being underspined with the 125's, the change will help. If you were in the middle of the arrows' spine range anyway, then you probably won't see any difference at all.
FYI, 4" vanes avg about 8.5 grains per each - varying, depending on the manufacturer. 4" feathers avg around 2.8 grains per each.
FYI, 4" vanes avg about 8.5 grains per each - varying, depending on the manufacturer. 4" feathers avg around 2.8 grains per each.
#8
Thread Starter
Join Date: Jul 2004
Location: Virginia
Posts: 36
RE: Arrow Weight
I went with the 340's for a little extra weight & spine.
I can't really tell any difference in POI between the 100 gr and 125 gr heads. Since that is the case, I don't really see any need to buy new broadheads. My trust 125 Muzzy's will do just as well.
I can't really tell any difference in POI between the 100 gr and 125 gr heads. Since that is the case, I don't really see any need to buy new broadheads. My trust 125 Muzzy's will do just as well.