Dave, because it is much warmer where I live the problem of heat walking and soften sabots is much greater, I some times have to wait 5 or 6 minutes between shots.
I have done some experimenting to see what would help the situation and so far using 3 or 4 guns so that the first shot has enough time to cool before shooting it again. The other thing is that the Harvester sabots seem to withstand a higher temperature than the MMP. When you want to shoot where the temperature is close to 100 this time of year [it is supposed to get to 98 today] this is a ongoing problem I wish some one would make some heat resistant sabots like maybe out of Teflon. If you find any good solutions please post them.