Originally Posted by Brian.Samson
I tend to use 32.174 for gravity, which would mean using 450436 in the calculation giving the answer
800 fps with an 8.4 grain pellet = 11.935 fpe
(11.99fpe for an 8.44 grain pellet though)
See if you're in London, you should be using 32.192
If in Edinburgh then 32.204
So 32.174 puts you somewhere in Spain as a rough guess.
Think we need to bin the imperial units