[Slamfire]

Without pressure gages to test your ammunition you are in a gray area. It could be something or it could be nothing.

All I have is a chronograph and that really does not tell pressure. But, I often fire factory loads, with the same bullet weight, believing that if my loads are faster than factory, then my pressures are higher.

If you are not experiencing extraction issues and your velocities are within the range of published data for that powder, I would not worry.

Based on my decades of shooting pistol ammunition, the velocity spreads are much, much wider than that of rifle loads. An 80 fps outlier may well be within the expected pressure and velocity variation for your load.