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Old 09-05-2016, 10:22 PM
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119bowhunter 119bowhunter is offline
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Default Inconsistent Broadhead Flight

Hello all,

It has been a couple of years since I have done much hunting, but due to locating a great new place for this season I have decided to get back into it. I have a Mathews Switchback (70 pound dw and 27.5 dl) that I've had for 10 years now and I've been shooting it almost daily all summer, I've been shooting pretty well out to 60 yards with my field points but I screwed on my broadheads today and started having trouble.

I'm shooting Easton Full Metal Jacket 400 spine arrows cut @ 28 inches with 100 grain Muzzy 3-blades. I could get pretty decent groups at 20 and 30 yards but at 40 yards and back I could not get my arrows to group well. My broadheads shot low and right of my field points but occasionally I would have one kick out several inches, which I haven't been doing with my field points.

I have not had my bow tuned since I started back shooting (I know I know) but because I was shooting well with the field points I guess I assumed everything was still in good shape, I have a couple of concerns:
1-Should I not even worry with troubleshooting until I take my bow to a shop to make sure nothing has creeped on me over the past 2 years
2-I was looking at the easton arrow spine chart and it looks like I'm borderline between a 400 and 340 spine arrow, could being underspined cause problems like I'm seeing?
3-Is it possible the flight in my field points have been covering up a flaw in my form/release/etc that is showing up with my "flyers" from shooting my broadheads?

I appreciate any insight... Thanks!
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