Broadhead tuning sucks

[Billy Goat]

I always had trouble with the carbon bows I shot, that's why I don't anymore.

Too much riser flex in my opinion.

Maybe it has been resolved, but I'm done with them.

 

[TX_Diver]

I know this in old thread, but I have been struggling some with one bow this year, and I normally can tune these bows up with no issues. I have two 2021 PSE Mach 1's set up at 60 pounds, RH and 29.5" draw. I'm shooting 200 spine Kinetics and with both bows, I tuned the first one in the shop by doing a shim swap to get the cams over to the left more, yoke tune and set the timing right. Set center shot to 13/16 and then paper tuned to a perfect bullet hole with the yokes. Went out and bareshaft tuned at 20 yards and got that right. Then broadhead tuned out to 60 yards and in I'm money right now with this bow.

Bow number two I did the same steps, but can't get my broadheads and field tips to close the gap. Same arrows and everything the same on both bows. When I bareshaft tune, I had to tweak my rest a tiny bit like I did on the first bow, and got them shooting great at 20 yards. I suspect I just need a few more tweaks on my broadhead tune to get them to come together, but this bow seems to be a lot harder to get it to behave than bow number one. Bow number one will be my main bow as I had planned, but I would like to have both tuned before I leave this Sunday. I've been shooting both all summer and field points fly like lasers out of both bows of course.

I'm shooting Exodus swept 100 grain heads, and they are some of the more forgiving heads I've shot over the years. I guess I typed all that to say this. Two exact bows, set up as close to exact as I can still are shooting differently. I even checked all the limb deflections and both bows are set up exactly the same as far as that goes. Rests are timed the same and attachment points on the limbs are at the same place. Same stabilizers, same sights, same quivers, same exact arrows and broadheads. Same string builder as well, and both check out to be perfect on factory specs.

The tune is not so far out that I can't make a few minor adjustments and get my broadheads flying perfectly and sighted in, but they are just off a few inches from each other vs the other bow where they are hitting very close together. And it gets under your skin after a while, but I know I'll eventually get it tuned up.

200 Spine? Or 300? 200 seems like it'd probably be stiff for most 60lb bows? Maybe 300 would be even depending on insert weight?

 

[Super 91]

200 spine. Uber stiff, but I can get them to fly perfectly with this 60 pound bow.