ORIGINAL: Doegirl75
There's absolutely no reason for someone shooting a modern compound at 50lbs to shoot a 500gr arrow. None. That's way beyond any gains in kinetic energy to be gotten and that arrow will drop like a friggin' rock. No thanks.
Actually, you're wrong one both accounts. Going from 340 to a 500 gr arrow on a 50# BT Equalizer (Is that what you shoot??), you'd gain 5ft/# of KE. 280 gr to 500 gr, you pick up nearly 9ft/#, and almost 50% of the momentum!!!! Don't get me wrong, I'm not saying that you should shoot a 500gr arrow, but if you really want the most "efficiency" out of your bow, you'll do better upping the arrow weight, than shooting a light near IBO arrow.
EDIT: those numbers were also based on a 28" draw, dropping the DL changes it significantly I should note, and that's using OT2, which I know over-estimates speed a little.
ORIGINAL: burniegoeasily
I just couldnt figure out what he was trying to accomplish. Mind you, I have not worked on compounds in a few years. I have been backed up on traditional bow orders. I got backed up due to a wood order not ariveing. I just finished building my last two custom bow and agreed to put together a compound for this guy. My concern is that the inertia of the arrow is going to be spread over the length of the arrow instead of the head. In the trad world we accommodatefor this by going heavy, 125-200+ grain heads.
His arrows did not penetrate my target near as well as a heavier head would. Too light of spine for my taste, to get these arrows to fly true. I feel he is loseing too much energy along the shaft after impact. I guess to each his own.
Agreed 100%. I notice a little difference just switching back and forth between 100 and 125 grain tips on arrows that are 415 and 440 grains. And that's only a 20% increase, not a 25% + increase if this guy were to slap 100gr or better tips on the arrows, plus a higher FOC would seem better for penetration in my mind anyhow.