I was using a load I worked up over the winter until about a week ago when it started getting 80+ around here. I was getting pressure signs so I started putting my ammo in a cooler and that worked ok. I wanted to work up a new load in this heat so I did, but what I found was my gun will not tolerate any loads within about a grain of book listed or QL max. Shooting some 130 grain BTs over H4831SC and maxing out around 2950 with my 26" factory tube. Would this be normal or should I be looking for something else causing pressure?