Well! I come to play Snorlax for a Bulky Offense, before i did not play it correctly with 252 HP/ 152 Def/ 104 SpD... After a friends of mines advised me to play it like that 248 HP/252 Def/8 SpD after that can be interesting at the level calc defensive.
252 Atk Teravolt Kyurem-Black Subzero Slammer (200 BP) vs. +1 248 HP / 252 Def Snorlax: 276-325 (52.7 - 62.1%) -- guaranteed 2HKO
252 SpA Greninja-Ash Hydro Pump vs. 248 HP / 8+ SpD Snorlax: 169-201 (32.3 - 38.4%) -- 97.5% chance to 3HKO
252 SpA Greninja-Ash Hydro Vortex (185 BP) vs. 248 HP / 8+ SpD Snorlax: 285-336 (54.4 - 64.2%) -- guaranteed 2HKO
252+ Atk Zygarde Outrage vs. 248 HP / 252 Def Snorlax: 186-219 (35.5 - 41.8%) -- guaranteed 3HKO
+1 252+ Atk Zygarde Outrage vs. 248 HP / 252 Def Snorlax: 277-327 (52.9 - 62.5%) -- guaranteed 2HKO
After offensively it depends 4th moveset Earthquake can for check Heatran or Magnezone, Fire Punch for Mega Scizor and Ferrothorn ,and Ice Punch allows to check such as Zygarde, Landorus, or Garchomp...
Defensely he is interesing for a Bulky Offense what i think....