This is going to come off as arrogant so I aplogize in advance. But even on the days when I set on stand all day in single digit orlow teen temperatures (which isn't that often where I live) I can still pull back 71 lbs quite easily. I shot 90 lbs for years, until technology made it possible to shoot the same speeds and KE at 70 lbsand until I started being able to "feel" shooting the higher weights in my shoulders after long sessions etc. So to me eventhough I haven't shot heavy poundage in several years. 70 lbs still feels real easy to pull. So no I have never had that problem. Not to mention the adrenaline boost has the opposite effect on me that it apparently does on some. When I get the adredaline pumping the weight comes back even easier. If anything, I sometimes pull back too hard in that situation.