I guess it will take a little trial and error on determining POI changes depending on different powders.
One of my favorite powders for several low pressure cartridges is 4744. An aquaintence suggested using another powder to lesson the heating effect of the powder. In lever action silhouette, obviously the POI change wouldn't be a significant factor I suspect, since it is with iron sights, off-hand and with rifles capable of 1 MOA at best.
But then there's those darn prairie dogs. Heating of the barrels can and usually is significant. (I'm guilty of burning out a barrel during the "heat of the battle" so to speak.) Some rifles don't change POI much upon heating, while some do.
That spreadsheet Clark shared, includes Moly coating. I wonder if Dyna Bore Coating would have a similar affect as Moly since I've chosen to use Dyna Bore and not to use Moly.
