energy matter but then so do momentum, and then so do bullet diameter. and then so does the bullet type you are using, a bullet made for controlled expansion with velocies of a 300 weatherby would not be a good bullet for the .308win round EVER. and the 44mag considered a great choice for hangun hunters never has more than 1000ft/lbs energy (at least in most normal loadings)

propmahn
you can never have too many guns