I made a 5-gal batch of cyser. I started with 3 gal of apple juice with 5 lb of honey. After a couple of weeks I added 3.5 lb of honey dissolved in a 1/2 gal of juice, and then added the same again, so I have 12 lb of honey and 4 gal of juice. I used 71B yeast.
Obviously my OG doesn't mean much since I step-fed it, but my FG is 1.006. I calculated what the OG should have been, if I'd thrown everything in at the beginning, and it was around 1.126 or so. Using the ABV calculator gives this an ABV of around 15.5%. Is it likely for 71B to go beyond its advertised tolerance of 14% if step-fed?