With those stats it will be OU at best and possibly even UU since Garchomp is clearly better in pretty much every way; bulky sets have marginally less physical bulk but have Rough Skin to deter physical attackers, and it has far more power and speed while having similar special bulk. Assuming the stats given by the OP are true, anyone using this - which has a useless ability for OU anyway - over Garchomp is just flat-out moronic, since it offers nothing which isn't outclassed by its offensively-inclined brethren. If it wants to be the bulky dragon it is obviously trying to be and distance itself from Chomp, its stats better be way above these.
It may be banned to BL if it goes to UU like Kyurem was if nothing there can really handle it, but base 100 attack is not what it used to be, especially considering this thing's lack of setup and poor movepool, and ice types / faster dragons / fairies can easily KO it. Honestly I'd rather use Flygon than this if these stats are about right, since that at least has a decent movepool and speed, and a niche as a U-turning dragon.