A longbow at 45 pounds will kill any deer. You have to be a bit more selective about what shots you take. You'll need to be close enough so you can place your arrow 'right there.'I'd question penetrationpower past 25 yards or so anyway. You'll have to put just a little more thought into your broadhead selection... And for hog hunting,I'd probably let a larger boar - say, bigger than 250 pounds -walk rather than risk a shot. I'd set my sights on smaller boars and sows.
A heavier bow's extra power opens up a few less than ideal shot angles, makes broadhead selection less critical and lets you hunt bigger animals andstretch out as far as your effective accuracy distance allows. It also helps guys with a less than ideal release get off the string cleaner, but that's a whole 'nuther issue.
After many years and many injuries, along with the onset of arthritis,my shoulders have forced me back to 45 pounds. I'm making a serious evaluation of my broadhead inventory.Dr. Ashby's reports on his broadhead effectiveness studies have me thinking seriously about changing from Magnus II tothe 100 gn Grizzly.I've already got all the other stuff taken care of.