The AMO recommended minimum arrow weight for 78# @ 29" draw is 454 grains. Go below that and you're taking chances on damaging your bow or, at the veryleast, decreasing it's service life.

IBO settledon5 grains per poundin it's rule book as theMINIMUM arrow weight that'd keep a bow from blowing up and hurting people on the range. It's a safety rule they were forced to adopt because so many people were getting injured by flying shrapnel around the idiots who were shooting extremely light arrows at extremely high poundages in the name of arrow speed.

Now folks think they're supposed to shoot 5 grains per pound.It makes me want to stand up and scream at them..."IT'S SUPPOSED TO BE A MINIMUM, YOU MORONS!" But that'd only get me in trouble. [8D]

Gibblet, you're right. High Country is the outfit that was advertising their bows can handle something like 3 grains per pound. (We won't mention that HC bow that blew up at the ATA show that year...)