We had a gong match last weekend with temps in the 80's and bright sun. When shooting a string at the 300 yd targets, several of us had the same problem. Two of us were shooting new 86's and one was shooting his original. As the barrels started heating up, accuracy went to pot. Do any of you have a known fix and had the same problems? Is the hot barrel binding up with the mag tube? Could it be the forearm wood binding up? Looking for some answers before just trying things out. I know these rifles were only meant to fire a few shots at once but our matches call for a string of ten. Thanks.