Please help, sighting in question
02-07-2005, 07:57 AM
#1
Thread Starter
Join Date: Dec 2004
Location: Alabama USA
Posts: 252
Please help, sighting in question
I have heard alot of you guys say that when you sight in your bow with your field points that your broadheads hit in just about the same area as your field points did. Well I'm having a little problem that I need some advice on. I sighted in my bow with field points (Tomkat 26" DL left handed, 70#, 400 gr arrow this is with the 100 gr field point, broadheads are muzzy 100gr 3 blade) & got it dead on @ 20, 30 & 40yards (all shots were within a 3 inch circle. Then when I switched to my broadheads my shots were off. Mainly 3-5 inches to the left and right. Could this be shooter error & myself pulling off or should I be looking for a problem somewhere else, or is this normal? I used same arrows that I shot my field points with & the broadheads were new without any obvious flaws I could see. Thanks for any input.
02-07-2005, 12:50 PM
#2
Join Date: Jan 2005
Location: Sheridan, Wyoming
Posts: 145
RE: Please help, sighting in question
O.k....you need to do a couple of things..First of all you need to paper tune your bow...I would go to a bow shop and they will explain to you how to do that and what to look for..After you are shooting bullet holes,you want to tune your broadheads and arrows..The way I do this is spin a head on an arrow,stand arrow upright on flat surface make circle with thumb and pointer finger around shaft below fletching and spin arrow with other hand.If the arrow wobbles a couple of inches above broadhead,loosen broadhead adjust rubber washer and retightem and try again..If problem persists put head on another arrow and same process.When you match arrow to broadhead that doesn't wobble you should be good to go..This can be frustrating but once heads are matched to arrows your groups will come together.. Good luck.
02-15-2005, 04:42 AM
#4
Join Date: Feb 2003
Location:
Posts: 2,413
RE: Please help, sighting in question
What arrow are you using, at what length? You may be borderline on spine, which can cause the problem you described. I have always gotten better flight from broadheads by going to a stiff arrow with a heavier head (increasing F.O.C.).
02-15-2005, 01:10 PM
#8
Nontypical Buck
Join Date: Feb 2003
Location: Onamia,MN.
Posts: 1,375
RE: Please help, sighting in question
Try backing off your poundage a couple of turns--that should help your groups if your underspined a little bit because it will act as if the arrow had a stiffer spine due to less force pushing the arrow.
02-15-2005, 04:34 PM
#9
Join Date: Feb 2003
Location:
Posts: 2,413
RE: Please help, sighting in question
In my opinion, you're underspined. Tuning may or may not be contributing to the problem, but shooting underspined arrows with a relatively low F.O.C., will not give the best broadhead flight in my experience.
02-16-2005, 07:23 AM
#10
Nontypical Buck
Join Date: Feb 2003
Location: Cornwall, Pa.
Posts: 1,720
RE: Please help, sighting in question
Are you impacting the target at the same height with your broadhead and field tips? The problem isn't with spine, but probably a slight adjustment of the nock set. The arrow you are shooting is correct for draw and weight. It sounds like your nock set is a bit too high. Shoot two fletched arrow at 10 yards and than shoot a bare shaft. The bare shaft should impact just below your fletched arrows. Loosen the nock set just enough to be able to turn it on the serving like a nut on a bolt. Turn it up 1 1/2 turns than lightly secure the set and try the bare shaft again. This should correct the problem. Let us know how you make out