I'm all over the internet comparing different arrow companies to each other. I'm trying to find a "perfect arrow". Please, give me your feedback on what you would do and why. Here's the scenario: Mathews Monster 28-1/2 in draw Set at 75 lbs (Don't ask me why.....this is my poundage!!) Do I go with a 340 spine with a heavy Grain Per Inch (Yes, some companies approve these #'s for the 340 spine)??? Or, Do I go with a lighter GPI 300 spine??? Comparison is 300 spine at 9.5 GPI or 340 spine at 10.3 GPI OR...Do I look at something completely different?? Help!
Because i'm right on the border of the two and I could go either way....that's why I'm asking for advice!!
Depending on what you're using to determine your spine requirements, I would lean toward the stiff side (go with the 300). Aggressive hard cams (at least in the case of my 101st) likes a bit stiffer shaft than the arrow charts recommend (just my experience).
What's the tip weight? 100 or 125 grains. If it is 125 I would go with the 300 if it were 100 I would probably go with the 340. The nice thing about compound bows is that the DW is adjustable and arrow length isn't static either. The bow doesn't need to be at absolute max DW to be effective nor does the arrow have to be a predetermined set length. Decide what arrow you want, what FOC you want, what total weight you want, what arrow length you might need to achieve this and then adjust your DW to get the best arrow flight.
MGH_PA, I'm leaning towards the 300's, just for that reason. Bruce, great point on adjusting the DW to accomodate the best arrow flight. However, I'm worried that I might have to adjust up more than I want to achieve the best flight for the 300's. (Past 74-75 lbs.) My head choice has always been 100g. Also, I might just stick with a 70 lb bow, max it out, and shoot the 340. Needless to say I have a $1000 decision to make!! Thanks for your help guys! If anyone has more advice, I could use it!!!!
You could always start with a longer arrow, 30"+, and a 125gr point. That would give you a lot of "adjustment" room, whether it is arrow length, tip weight or DW.
You can also get a 300 in the heavier shaft (like an Easton Axis 300). This will give you the spine you need as well as mass for great KE. That would be my advice. In all honesty... there is no such thing as an "overspined" arrow. Very very seldom will you ever see any problems from a stiff arrow, a weaker arrow on the other hand... is a different story.
The 340 spine should be 9.5 GPI if you are still looking at the AXIS NANO's, the 300 will be 10.3 GPI and the stiffer choice. I am shooting 100 and 125gr. heads with the 340's @28" from a Katera Maxed out at 82.2#. Both sets are flying the same and their is no noticeable change in the flight pattern even though the 125gr. puts me at a 300 spine per the chart. If you want to knock down a Cape Buffalo go with the 300 spine, if you are worried about keeping speed up and shooting a 100gr. head stick with the 340.
If you're on the border of two weights always chose the stiffer spine. It's easier to tune a slightly stiff arrow than a weak one.
http://www.eastonarchery.com/products/selection These are the guys I believe. Most agree a completed arrow weight "in the middle" will provide best accuracy, superior penetration, moderate drop and a quiet bow.
I would go a little stiff, and leave the arrow longer + use a 125gr. head. If not, then go short and 100gr. with the 340. Derek
