Problems with overspined arrows?

JOE PA · 07-01-2005, 08:10 AM

The arrows I have been shooting (3-60 ACCs) were purchased when I was shooting a 65#, hard cam bow. I am now shooting at 61# with two hybrid cam bows. These arrows seem to shoot just as well as they ever did, even though the charts call for a 3-49 with my current setups. Then a friend gave me some Carbon Tech Cheetahs (55/80s) that the charts say are the correct spine for 75# bows (29" arrows). To my surprise, they are shooting very well, even with broadheads. Other than shooting an arrow that is a little heavier than needed, is there really a big downside to shooting an overspined arrow (compound release)?

I would think the relatively stiff arrow might help penetration in game.

ijimmy · 07-01-2005, 11:04 AM

There are some disadvantages to being overspined , but being underspined is so much worst that it allmost pays to be overspined . The disadvantages would that your setup would be less forgiving than if you were spined right on .

Arthur P · 07-01-2005, 11:37 AM

Don't worry a whole lot about the charts. They're just suggested starting points anyway. Shoot whatever arrow spine the bow likes best. Some bows like stiffer arrows than the chart calls for.

Straightarrow · 07-02-2005, 05:38 AM

Quote:

Other than shooting an arrow that is a little heavier than needed, is there really a big downside to shooting an overspined arrow

Heavier than needed? It might be heavier, but that is a good thing when for most hunters.

I personally disagree with trying to get an exact spine match with most carbons. So many have such a wide variation in actual measured spine in a dozen, that you end up shooting some that are on the weak side, and some that are stiff. I think most are much better off shooting all arrows on the stiff side. Your ACCs are probably an exception to this.

I find that I get great broadhead flight when tuning my setup with all arrows on the stiff side.

JOE PA · 07-02-2005, 05:55 AM

Thanks for the responses. I wasn't surprised by the ACCs, since I've been shooting well with them before, and they aren't drastically overspined. The Cheetahs were a surprise though. I had been shooting them with 125 gr. points to "soften them up", and on a whim tried 100 gr. points, since those are the only Muzzys with practice blades that I currently have. Still needed to tweak the rest a little as the BHs were hitting just a little high, but flight and accuracy were all I could ask for. Grouping was good even with the factory straight offset fletch.