I can recall, in Italy with the Navy decades ago, using the method (after having seen an Italian do it). The bottle in shoe, bang on wall version likely spreads the impact for a more effective hydraulic effect. I do recall the caveat that accompanies the trick. Use only "new" wine which as been stored vertically, so that the cork will not have swollen from absorption. It must have been in Taranto, where there was not much else to do and the local "vintage" had little to recommend it. Old naval engineers and gunners could probably prove up that the narrow neck of the bottle increases the pressure of the liquid slammed against the cork. The floor is a bad choice. Gravity limits the hydraulic "ram" effect.