so i went out shooting with my new broadheads. (bought two packages one to shoot with and one to hunt with). but i've been practicing with my old broadheads all summer. and sighted in my bow for them. but now all of the sudden. my new ones are shooting all over the place. and my field points are shooting straight in the middle along with my old broadheads. what is the deal with this?? they are exatcly the same grain.

You say they are the same grain....are they the same brand andmodel BH's? ( I am assuming they are, but you don't specify)
What BH's are they?

Didyou spin test them...both new and old?

While it doesnt seem reasonable, I have seen packs that were just junk. Can you put new blades in the old ones and use them to hunt with? You will need new blades anyway now that they have been shot...or at least touch them up with a stone or small file.

I would take the newest pack back and use the old ones w/new blades. However, you should spin test them to see if they wobble.
I have also seen them mislabled as far as weight.

http://www.broadheadtests.com/TUNING.html I susspect you have more of an arrow/tuning issue. follow my link which should help you get on track.

yeah u have to give us the brand...try slick tricks they hit with the field points