The above 10-shot was fired in about 30 seconds. This was roughly 30 min into the range session, preceded by constant firing. So the barrel was already fairly hot. The only rest it got was during range clears.
I do know that heat causes the barrel to perform differently but I simply ignored it for that string. I've read an article somewhere that analyzed heat effects on different rifle barrels. Basically they got all random results based on differences in manufacturer product and materials.
Short of that, I know hot is bad (generally) for tight groups.
But it works for me.