Reno, 83 to 88 % depending on where you go (just stay away from the Nugget in Sparks. Vegas is known for tighter slots and their average runs around 80 to 85%.
I'd done this perhaps two dozen times at Graton's and the average runs at around 60 to 65 percent, tops. This must be done several times for closer accuracy, but you'll get a sense. If on average you end up wit 85.00, obvilously 85 % can be assumed the average payout.
The way to gauge the payout percentage on slots is to put a demonination, say $100.00, play only the hundred in whatever denomination chosen, i.e 40 cents, 80 cents- no matter- but totaling no more nor less than the hundred and what results once finished.
