arrow grain question????

last season i purchased the hoyt alphamax 32 for that bow i have 400g beman ics bowhunter arrows. the arrows i had for my last bow were 340g beman ics hunter. can i use those on my hoyt? i know nothing about the reasonings behind using different grains for diff bows. i look forward to hearing your input. thanks.
-mike-

If Dave reads this post he can help you out with this or go to the arrow guide for the arrow you are using it will tell you what grain you should be shooting for your poundage on your bow.

More than likely the 340 and the 400 are not the actual grains of the arrow, but rather the spine size. Since I don't know the specific model of arrow you are shooting I can't tell you the exact gpi's (grains per inch). My guess is the 400's will be around 1 grain per inch less than the 340's. The shorter arrows you shoot, the less stiffer spine you need. Someone shooting a 70 pound bow with a 30 inch arrow might need the 340 spine, while someone shooting the exact same poundage with only a 27.5 inch arrow will shoot a 400 spine arrow.

Your best bet is to go to Bemans web site and go to the "shaft selector" section and enter the info on your bow set up and it will tell you what size spine you should be using. I hope I was not to confusing and if you still have questions, PM your number and I will give you a call and make sure you are all straightened out. Good luck!

I would check out the brand of arrows website and figure out what spine you should be shooting. If you have the box the arrows come in it will be on the back of that as well.