Basic strategy + Martingale. What am I missing?

Hey guys. I’ve been playing BJ in my local casino (BS only, no card counting). I flat bet $25, and then use Martingale negative progression up to $400.

Hand 1) Bet $25. If win. Net = +$25. If lose, Net = -$25

If lose –
Hand 2) Bet $25. If win. Net = $0. If lose, Net = -$50
Hand 3) Bet $50. If win. Net = $0. If lose, Net = -$100
Hand 4) Bet $100. If win. Net =$0. If lose, Net = -$200
Hand 5) Bet $200. If win. Net =$0. If lose, Net = -$400
Hand 6) Bet $400. If win. Net =$0. If lose, Net = -$800
End.

So the max I can lose is $800.

The odds of losing 6 hands in a row is 2.1% (1 in 47). So as long as I’m ‘up’ say $100 (a modest amount) in those other ’46’ games, then I’m running at a profit.

I understand that technically I could walk in 1 day and lose $800, and then on day 2 I lose another $800, but the odds of this happening are extremely low (1 in 47, followed by another 1 in 47).

In short, I’m up around $3,200 for the last couple of weeks. I always walk out after winning $100 – $200, and I’ve yet to hit a 6 hand losing streak. Granted – it will happen, but the max I will lose is $800.

Is my strategy sustainable for the long term or am I missing something? Cheers.

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