Boy when I said this I never thought this would apply to me as well in the medium bore class
Patience, carefull heat control and lots of dumb luck really paid off today. I figure the least I can do is share my secret
I fired one fouling shot at the backstop to get the rife up from room temp to close ambient temp (warm) fired the first shot of my group and followed up with the other four at 5 minute intervals
the hole towards the top of the plate is from a staple
please don't hate me
unfortunately I got the 7400 hot during sight in and as we all know a hot 7400 isn't a happy 7400 in terms of accuracy and at 90 degrees+ I never could get the heat back down to shoot serious groups. I'll try again another day.