So i have recently been watching some training/lifting videos of powerlifters and just athletes in general and have noticed that alot of heavy lifters arent completing the full range of motion but rather just the range where the muscle is contracted. I know there are several reasons that could account for this but i was wondering if anybody had an opinion on this. Do you get more bang for your buck by lifting heavier and just using this shorter range...or going full out?

Thanks in advance