The pressure points on the end of the stock are good with my Vanguards. Not every load and not every barrel reaction the same to each other and its possible your rifle would be more accurate with a floated barrel --- or not. Since I use a variety of powder loads and bullet weights with virtually all my rifles, a certain load that is not varied is not something I have.
Depending on the temperature, 25 rounds in 20 minutes could be a lot. If the barrel is hot to the touch then you've worked it too much.