[Living Free in NH]

8.34, often rounded to 8.33 for evenness.

Rounded to an odd number for evenness?

[T-Bird45]

“Rounded to an odd number for evenness?”

Sure, if you use the fractional equivalent of 8-1/3# per gallon. Thus, every 3 = 25#.

[FreedomPoster]

At 8.33, GPM x Delta-T x 500 = BTU/Hr.

At 8.34, you’re at a little more over 500. It’s good either way, you’re rarely doing something for which you need more than 2-3 significant digits.