If your draw length is 28" or longer there are tons of bows that will reach 300fps at those draw weights. You just have to pick an arrow that weighs in at the bow manufacturers' recommended minimum of 5 gr/lb of draw weight, and there are lots of them, too.

For instance, shooting a 27" draw at 42# I have built properly spined arrows that weigh as little as 209 grains. They're out there. You just have to find them and match components accordingly.